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Question #:1

Priority 0 in the VRRP packet indicates that the device stops participating in the VRRP backup group.

A. True

B. False

Answer: A

Question #:2

The TTL value of the first UDP packet sent by Tracert?

A. 1

B. 2

C. 3

D. 4

Answer: A

Question #:3

RlP protocol applies to IP-based ()

A. Large network

B. Small and medium network

C. Larger networks

D. between isp and isp

Answer: B

Question #:4

Which of the following protocols belong to the transport layer? (multiple choice)

A. IP

B. TCP

C.

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C. UDP

D. SNMP

Answer: B C

Question #:5

In HDLC, the start and end fields of the flag frame are a fixed value, is it?

A. 11111111

B. 1111110

C. 0

D. 11111110

Answer: B

Question #:6

Which of the following techniques can improve the efficiency of IP address usage?

A. DHCP

B. DNS

C. ARP

D. FTP

Answer: A

Question #:7

View the information of the static route on the router. What is the backup attribute of the backup route?

A. Bypass

B. Inactive

C. Backup

D. Slave

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Answer: B

Question #:8

Which of the following protocols provides a connectionless transport service?

A. IP

B. IPX

C. TCP

D. UDP

Answer: D

Question #:9

When configuring a static route on a router, what parameters can be configured in the <Interface_name> |
<gateway_address> field? (multiple choice)

A. Outlet

B. Outbound interface IP address

C. Next hop address

D. null 0

Answer: A C D

Question #:10

The HTTP protocol uses TCP communication, and the default port is

A. 80

B. 8080

C. 110

D. 25

Answer: A

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Question #:11

In an OSPF network, the following description about the Router ID is incorrect.

A. The router IDs must be the same in the same area. The router IDs in different areas can be different.

B. The router ID must be the IP address of an interface on the router.

C. You must manually configure the specified router ID.

D. The prerequisite for the normal operation of OSPF is that the router has a router ID.

Answer: D

Question #:12

Which of the following is the transport layer protocol used by Telnet?

A. TCP

B. UDP

C. ECMP

D. UCMP

Answer: A

Question #:13

What does the Eudemon firewall use to monitor the transition of a session (data connection)?

A. Routing table

B. Session table

C. NAT conversion table

D. Neighbor table

Answer: B

Question #:14

What is the broadcast MAC address?

A.

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A. FF-FF-FF-FF

B. FF-FF-FF-FF-FF-FF

C. 00-00-00-00-00-00

D. 00-00-00-FF-FF-FF

Answer: B

Question #:15

Directly connected to the specified port of the peer device, does not forward any packets, but which port is the
port that receives BPDUs to monitor network changes?

A. Root Port

B. Designated Port

C. Alternate Port

D. Disable Port

Answer: B

Question #:16

In the configuration of port mirroring, what is the command involved to complete a port-based mirroring?

A. port-copy

B. port-mirroring

C. redirect

D. port-poliy

Answer: B

Question #:17

Asynchronous Response Mode (ARM) is a way of allowing any node to initiate a transfer.

A. True

B.

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B. False

Answer: B

Question #:18

What is the correct description of the switch trunk port? (multiple choice)

A. Can be used for interconnection between switches

B. Can be interconnected with the user PC

C. The port receives the untag data and does not receive it.

D. The port can forward multiple vlan data

Answer: A B D

Question #:19

In the router, the configured default route is a route entry that is used by the packet during the forwarding
process.

A. True

B. False

Answer: A

Question #:20

The RTA uses the Ethernet0/0 interface to connect to a LAN. The IP address of the port is 10.1.1.251 and the
network mask is 255.255.255.0.

It is required to create a virtual router on the RTA with ID 1 and virtual IP address 10.1.1.254. Which of the
following is correct?

A. [RTA-Ethernet0/0]vrrp vrid 1 virtual-ip 10.1.1.254

B. [RTA]vrrp vrid 1 virtual-ip 10.1.1.254

C. [RTA-Ethernet0/0]vrrp vrid 1 virtual-ip 10.1.1.254 mask 255.255.255.0

D. [RTA]vrrp vrid 1 virtual-ip 10.1.1.254 mask 255.255.255.0

Answer: A

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Question #:21

What part of a complete data communication system should be composed (multiple choice)

A. Message (message)

B. sender (sender)

C. Receiver (receiver)

D. Medium

E. Power (power)

Answer: A B C D

Question #:22

What kinds of frame types does HDLC have? (multiple choice)

A. Information frame

B. Monitoring frame

C. Unnumbered frames

D. Retransmission frame

Answer: A B C

Question #:23

The following is wrong about the STP statement ()

A. The STP protocol stipulates that when the port is in the Disabled state, the port does not send or receive
any packets.

B. The STP protocol stipulates that when the port is in the Blocking state, the port does not receive or
forward data, but does not send BPDUs, and does not perform address learning.

C. The STP protocol stipulates that when the port is in the learning state, the port does not receive or
forward data, receives and sends BPDUs, and starts address learning.

D. The STP protocol stipulates that when the port is in the Listening state, the port does not receive or
forward data, but does not send BPDUs, and does not perform address learning.

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Answer: D

Question #:24

The SMTP protocol is transmitted based on TCP. What is the port number?

A. 21

B. 23

C. 25

D. 53

Answer: C

Question #:25

Which of the following static routing configurations are correct? (multiple choice)

A. ip route-static 129.1.0.0 16 serial 0

B. ip route-static 10.0.0.2 16 129.1.0.0

C. ip route-static 129.1.0.0 16 10.0.0.2

D. ip route-static 129.1.0.0.255.255.0.0 10.0.0.2

Answer: A C D

Question #:26

The biggest feature of HDLC is support for encrypted transmission.

A. True

B. False

Answer: B

Question #:27

What is the correct statement about the trunk port? (multiple choice)

A. trun4 port can forward data of multiple VLANs

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B. The trunk port has only one PVID.

C. trunk port can be used to connect to the port of the user's computer

D. trunk port cannot receive data with tag

Answer: A B C

Question #:28

Which of the following can be roughly divided into backbone networks? (multiple choice)

A. Mesh full connection structure

B. Planar hierarchical structure

C. Plane + space hierarchy

D. Double-homing structure

Answer: B C

Question #:29

On the VRP platform, what methods can be used to make the interface of the router only receive RIP routing
updates? (multiple choice)

A. silent-interface

B. rip in

C. rip out

D. rip work

Answer: A B

Question #:30

If a switch displays part of the information as follows, what is the PVID of this port?

[Quidway] display interface Ethernet 1/0/1...Mdi type:autoPort link-type:accessTagged VLAN

A. 0

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B. 1

C. 5

D. Insufficient information, unknown

Answer: C

Question #:31

In the configuration below, a PPP connection is configured and the IP address is dynamically assigned. After
the link is successfully established, a direct route of 10.1.1.0/30 will appear in the routing table.

[RTB] interface Serial 0[RTB-Serial0] link-protocol ppp [RTB-Serial0] ip address 10.1.1.2 30[RTB-Serial0]
remote address 10.1.1.1

A. True

B. False

Answer: B

Question #:32

PPP terminates the link at any time. When the carrier is lost, the authentication fails, the link quality detection
fails, or the administrator manually closes the link, the link is terminated. In the link establishment phase, the
link may be closed by exchanging The link termination message of the LCP. When the link is closed, the link
layer notifies the network layer to perform corresponding operations, and also forcibly turns off the link
through the physical layer.

A. True

B. False

Answer: A

Question #:33

Regarding the OSPF neighbor router, what are the following statements correct? (multiple choice)

A. The OSPF interface sends Hello packets to discover neighbors.

B. The router that receives the Hello packet sent by the peer router becomes the neighbor relationship.

C. The OSPF router that receives the Hello packet checks the parameters defined in the packet. If the two
parties agree, the neighbor relationship will be formed.

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D. Neighbor discovery is equivalent to adjacency

Answer: A C

Question #:34

Twisted pair can be classified as? (multiple choice)

A. Direct network cable

B. Crossover cable

C. Interwoven network cable

D. Shielded network cable

Answer: A B

Question #:35

The level of TCP/IP protocol is not divided according to the OSI reference model. Corresponding to OSI's
seven-layer network model, which of the following options is not defined?

A. Link layer and network layer

B. Network layer and transport layer

C. Session layer and presentation layer

D. Transport layer and session layer

Answer: C

Question #:36

The main feature of the LAN is that the network is owned by one unit and the geographical range and number
of stations are limited.

What are the common transmission media in the LAN? (multiple choice)

A. Fiber

B. Coaxial cable

C. Twisted pair

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D. Serial cable

Answer: A B C

Question #:37

Which of the following addresses does 192.168.1.128/25 represent?

A. Host

B. Network

C. Multicast

D. Broadcasting

Answer: B

Question #:38

Which layer of the TCP/IP model does the repeater work on?

A. Physical layer

B. Data link layer

C. Transport layer

D. Application layer

Answer: A

Question #:39

Regarding OSPF routers, neighbor relationships and connection relationships, what are the correct
descriptions? (multiple choice)

A. Neighbor relationships must form adjacencies

B. The adjacency relationship must be a neighbor relationship

C. Neighbor relationship can synchronize LSDB

D. Adjacency can synchronize LSDB

Answer: B D

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Question #:40

75For such several network segments: 172.168.16.0, 172.168.17.0, 172.168.18.0, 172.168.19.0, which of the
following network segments is best used to implement route summarization?

A. 172.168.16.0/21

B. 172.168.17.0/21

C. 172.168.16.0/22

D. 172.168.20.0/20

Answer: C

Question #:41

According to the different protocols applied by the routing protocol, what kind of routing protocols can be
divided into? (multiple choice)

A. Multicast routing protocol

B. Unicast

C. Distance vector

D. Link status

Answer: A B

Question #:42

What is the Age time of the RIP routing protocol that is viewed by the command on the router?

A. RIP packet update interval

B. RIP route aging time

C. RIP route suppression time

D. RIP route switching time

Answer: B

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Question #:43

In which of the following network topologies, is there a redundant link between every two nodes? (multiple
choice)

A. mesh

B. star

C. tree

D. bus

E. ring

Answer: A E

Question #:44

What are the characteristics of the OSPF routing protocol? (multiple choice)

A. Using route number for path calculation

B. No routing self-loop

C. Route calculation can be done in different regions

D. Suitable for routing between different Ass

Answer: B C

Question #:45

In the following IEEE standards, is 802.3z a () standard?

A. Fast Ethernet standard

B. Gigabit Ethernet standard

C. Ethernet standard

D. 10 Gigabit Ethernet standard

Answer: B

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Question #:46

In the OSPF network, for the benefit of dividing the area, the following description is incorrect ()?

A. Reduce the size of the LSDB

B. Reduce the complexity of running the SPF algorithm

C. Reduce entries for intra-area routes

D. Conducive to routing for aggregation

Answer: C

Question #:47

Which configuration method can be used to add the trunk port ethernet0/1 of the switch to VLAN 4? (multiple
choice)

A. [Switch]vlan 4 [Switch-vlan4]port ethernet 0/1

B. [Switch]vlan 4 [Switch-Ethernet0/1]port trunk pvid vlan 4

C. [Switch]vlan 4 [Switch-vlan4]port trunk ethernet 0/1

D. [Switch]vlan 4 [Switch -Ethernet0/1]port trunk permit vlan 4

Answer: A B D

Question #:48

Frame Relay works at the data link layer, which of the following functions are provided? (multiple choice)

A. Statistical multiplexing

B. Frame transparent transmission

C. Error detection

D. Retransmission operation

Answer: A B C

Question #:49

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Regarding RIP route aggregation, what are the following statements correct? (multiple choice)

A. Route aggregation refers to the route sent by different subnets in the same natural network segment to a
natural mask when sent to other network segments.

B. RIPv1 does not support route aggregation

C. Huawei routers use RIPv2 to disable route aggregation by default.

D. When all subnet routes need to be broadcasted, you can disable RIPv2 route aggregation.

Answer: A B D

Question #:50

Eudemon firewall. In general, which security domain is the external service network placed in?

A. Local domain

B. DMZ domain

C. Trust domain

D. Untrust domain

Answer: B

Question #:51

Configure RIP on Router A and enable RIP routing on the network segment where S0 (IP address is
10.0.0.1/24). Which of the following commands are required? (Multiple choice)

A. rip

B. rip 10.0.0.0

C. network 10.0.0.0 255.255.255.0

D. network 10.0.0.0

Answer: A D

Question #:52

The characteristics of dynamic ECMP equal-cost routes are ()? (multiple choice)

A.

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A. Protocol is the same

B. Preference is the same

C. Cost is the same

D. Mask is the same

Answer: A B C

Question #:53

Which of the following types of ports allow transparent transmission of VLANs? (multiple choice)

A. Trunk

B. Access

C. Hybrid

D. Normal

Answer: A C

Question #:54

If the frame relay protocol is encapsulated on the interface of the Huawei router, do you need to enter the
command in the interface view?

A. link-protocol fr

B. encapsulation fr

C. enable fr

D. address fr

Answer: A

Question #:55

In the PPP protocol, the second handshake authentication protocol is required. Which of the following is the
password in plain text?

A. PAP

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B. CHAP

C. MD5

D. TCP

Answer: A

Question #:56

What is the role of the routing protocol?

A. Basis for data forwarding

B. Building a routing table

C. Management router

D. Generate an IP address

Answer: B

Question #:57

It consists of glass fiber and shielding layer, is not affected by electromagnetic signals, has high transmission
rate and long transmission distance. But it is expensive.

What is this physical medium?

A. Same transmission cable

B. Twisted pair

C. Fiber

D. Waveguide fiber

Answer: C

Question #:58

In VRP, what are the following statements about RIP V1 and RIP V2?

A. RIP V1 messages support VLSM

B. RIP V2 messages support VLSM

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C. RIP V2 uses route aggregation by default.

D. RIP V1 only supports simple password authentication for packets, while RIP V2 supports MD5
authentication.

Answer: B C

Question #:59

Which of the following port numbers can the FTP server use to listen for FTP client connections by default?

A. 21

B. 23

C. 25

D. 53

Answer: A

Question #:60

Which of the following statements about VLANs are correct? (multiple choice)

A. Users in different VLANs are not on one network segment.

B. The number of VLANs that the switch can support is related to device performance.

C. Users in different VLANs cannot communicate with each other.

D. VLAN can effectively isolate broadcast packets.

Answer: A D

Question #:61

What are the forwarding modes of Layer 2 switches? (multiple choice)

A. Direct forwarding

B. Store and forward

C. Fragment forwarding

D. Update forwarding

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Answer: A B C

Question #:62

What is the packet that the STP downstream device uses to notify the upstream device that the network
topology changes?

A. Agency BPDU

B. TCN BPDU

C. Discover BPDUs

D. Reverse BPDU

Answer: B

Question #:63

Which of the following protocols does the FTP protocol provide for reliable data transfer?

A. RTP

B. SIP

C. UDP

D. TCP

Answer: D

Question #:64

If the mask of a Class C subnet is 255.255.255.224, what is the number of subnets, the number of subnets, and
the number of hosts in each subnet?

A. 2, 4, 62

B. 3, 8, 30

C. 4, 16, 14

D. 5,32,6

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Answer: B

Question #:65

Similar to the OSI model, the TCP/IP model also uses a hierarchical structure.

Is the TCP/IP model divided into several levels?

A. Four

B. Five

C. Six

D. Seven

Answer: B

Question #:66

Which of the following options can the application PING specify when sending ICMP messages? (multiple
choice)

A. Source address

B. Message size

C. TTL

D. Transmission frequency

Answer: A B C

Question #:67

Which type of packet is exchanged during the PPP link establishment phase?()

A. LCP

B. NCP

C. PPP extended protocol family

D. PPPOE

Answer: A

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Question #:68

On the root bridge of the STP network, the root path cost of each port to the root bridge is 0.

A. True

B. False

Answer: A

Question #:69

What kind of storage medium is the initial configuration file of the router generally stored on?

A. SDRAM

B. NVRAM

C. Flash

D. Boot ROM

Answer: B

Question #:70

Which of the following is the correct description of the Message Age in the configuration BPDU packet?
(multiple choice)

A. If the configuration BPDU is sent by the root bridge, the Message Age is 1.

B. Message Age is the total time that the BPDU is sent from the root bridge to the current bridge.

C. In actual implementation, the BPDUs are configured to pass through a bridge, and the Message Age is
increased by 1.

D. The value of Message Age will not exceed 15

Answer: B C

Question #:71

The FTP session contains two channels, which are respectively (multiple choice)

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A. Output channel

B. Input channel

C. Control channel

D. Data channel

Answer: C D

Question #:72

What are the correct descriptions of the working principle of the Layer 2 Ethernet switch in the following
options? (Multiple choice)

A. All data frames on the network segment connected to the receiving port

B. Establish a MAC address table by using the destination MAC address in the received data frame.

C. Look up the destination MAC address in the data frame in the MAC address table, send the data frame
to the corresponding port if it is found (excluding the source port); if not found, go to all ports except the
source port send

D. Address table maintenance using the address aging mechanism

Answer: A C D

Question #:73

The correct statement about static routing is ()?

A. Static routes are manually added to the routing table, not dynamically updated by the routing protocol.

B. Static routing is the route that the router sets before leaving the factory.

C. Static routes are always recalculated when the network changes

D. Static routes are learned after learning through other routing protocols.

Answer: A

Question #:74

Regarding the process of terminal users accessing the Internet, what are the correct descriptions below?
(multiple choice)

A.

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A. The user initiates an Internet access request, and the Layer 2 device of the access network establishes a
Layer 2 connection for the user and transparently transmits the request to the upper BRAS device.

B. The access network does not control the user, but simply establishes a Layer 2 connection to
transparently transmit user information to the upper device.

C. SR is responsible for the authentication, authorization, and assignment of IP addresses to users.

D. After the user authentication succeeds, the BRAS routes the user packet to the upstream device, that is,
the aggregation layer device.

Answer: A B D

Question #:75

The router does not need to know the complete forwarding path. It only knows how to get to the nearest next
hop of the destination. What is the process of relaying and forwarding this message?

A. hop by hop forwarding

B. host by host forwarding

C. router by router forwarding

D. network by network forwarding

Answer: A

Question #:76

Which of the following is true about ping and Tracert? (multiple choice)

A. Both ping and tracert use ICMP packets.

B. Both ping and tracert can detect link connectivity

C. Both ping and tracert can test the path through which the target node is reached.

D. The packets sent by ping and tracert are the same.

Answer: A B

Question #:77

A permanent virtual circuit is to provide a fixed virtual circuit to the user. Once the circuit is established, the
link water is valid, unless the administrator manually deletes it. PVC is used for frequent and stable traffic

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transmission between the two ends.

A. True

B. False

Answer: A

Question #:78

Regarding FTP, what are the following statements correct?

A. FTP is a UDP-based protocol

B. FTP is designed for low-rate file transfer

C. FTP can provide control of the login name and password of the FTP user.

D. The router can support two working modes: FTP Client and FTP Server.

Answer: C D

Question #:79

The NCP is mainly used to negotiate the format and type of data packets transmitted on the data link, such as
an IP address.

IP address negotiation includes two ways? (multiple choice)

A. Static configuration

B. Dynamic negotiation

C. Rental interface IP

Answer: A B

Question #:80

Which of the following network types are there?

In order to avoid the problem of slow route convergence, the DR and BDR router roles are designed. (multiple
choice)

A. Point to point

B.

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B. Broadcast type

C. NBMA

D. Point to more points

Answer: B C

Question #:81

What does the Access port do when it sends a message?

A. Send a message with tog

B. Strip the VLAN information of the packet and send it directly.

C. Exchange the VLAN information of the packet and send it out.

D. Put the PVID information of this port.

Answer: B

Question #:82

How many bits are included in the VLAN tag to identify the VLAN to which the data frame belongs?

A. 4

B. 32

C. 12

D. 8

Answer: C

Question #:83

Which of the following options are the disadvantages of single spanning tree? (multiple choice)

A. Single spanning tree may cause hosts on the same VLAN on different switches to fail to communicate.

B. Traffic sharing on different links cannot be performed under single spanning tree conditions.

C. When running a single spanning tree, the entire network converges slowly.

D.

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D. Under the condition of single spanning tree, there may be a suboptimal second layer path.

Answer: A B D

Question #:84

Which of the following are reserved VLAN IDs? (multiple choice)

A. 0

B. 1

C. 1023

D. 4095

Answer: A D

Question #:85

During the PPP link establishment phase, the value of the parameter in the Configure-Request sent by the peer
is not recognized locally. Which message should the local end respond to?

A. Configure-Nak

B. Configure-Reject

C. Configure-Ack

D. Not right

Answer: B

Question #:86

Which of the following technologies can save the number of IP addresses?

A. NAT

B. DNS

C. CIDR

D. VLSM

Answer: A

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Question #:87

Which of the following conditions will cause PPP to terminate the link? (multiple choice)

A. Transfer too much information

B. Carrier loss

C. The administrator manually closes the link

D. Link quality detection failed

Answer: B C D

Question #:88

If the IP address 10.110.53. and 10.110.127.2 44 are on the same network segment, what are the mask lengths?
(multiple choice)

A. 16

B. 17

C. 18

D. 19

Answer: A B

Question #:89

The transmission link used by Frame Relay to transmit data is a logical connection, not a physical connection.
Multiple logical connections can be multiplexed on one physical connection, which enables bandwidth
multiplexing and dynamic allocation.

A. True

B. False

Answer: A

Question #:90

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Which of the following operations can determine the problem with the installation or operation of the TCP/IP
protocol?

A. ping 10.1.1.1

B. ping 127.0.0.1

C. ping 169.254.1.1

D. ping 192.168.1.1

Answer: B

Question #:91

What is the effect of the command port trunk permit vlan all?

A. All VLANs are allowed to pass on this port.

B. The peer port connected to the port must be configured with port trunk permit vlan all.

C. The connected peer device can dynamically determine which VLAN IDs are allowed to pass.

D. If the port default vlan 3 command is configured for the connected remote device, VLAN 3 between the
two devices cannot communicate.

Answer: A

Question #:92

Each MAC address consists of two parts, the vendor code and the serial number.

Where is the number of bytes of the vendor code?

A. 1

B. 2

C. 4

D. 6

Answer: D

Question #:93

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What parts of the general network address are composed? (multiple choice)

A. Logical address

B. Link address

C. Network address

D. Host address

Answer: C D

Question #:94

When the network topology changes, if the best path to the destination IP is no longer available, the dynamic
routing protocol can adapt to the network change and determine the best path to the destination IP.

A. True

B. False

Answer: A

Question #:95

Assume that the interval of the VRRP advertisement message is set to 2 seconds, the preemption mode is on,
and the Delay Time is set to 3 seconds. The Master Down Interval is:

A. 2 seconds

B. 4 seconds

C. 6 seconds

D. 9 seconds

Answer: D

Question #:96

Copy the incoming and outgoing data packets of the mirrored port to the mirrored port. Is this mirroring based
on which of the following options?

A. Link

B.

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B. Peer

C. Flow

D. Port

Answer: D

Question #:97

The CIR-compliant packet sent directly from the PVC and the packet dequeued from the PVC queue are sent
to the interface. If the interface is congested, the interface is queued.

Which types of queue scheduling are supported by the FRTS enabled interface? (multiple choice)

A. PVC PQ

B. CBPQ

C. CBWFQ

D. PVC WFQ

Answer: A C

Question #:98

Which of the following timers is used to prevent temporary loops when the Spanning Tree Protocol handles
link failures?

A. Hello Time

B. Forward Delay

C. Max Age

D. Message Age

Answer: B

Question #:99

In full-duplex mode, both parties can receive and transmit data simultaneously.

Which of the following options is working in full duplex mode?

A.

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A. Keyboard

B. Display

C. Interphone

D. Telephone network

Answer: D

Question #:100

A common PPP authentication protocol is PAP and CHAP. The two ends of a PPP link can use different
authentication protocols to authenticate the peer. However, the authenticated party must support the
authentication protocol used by the authenticator and correctly configure the authentication information such
as the username and password.

A. True

B. False

Answer: A

Question #:101

Regarding the trunk port, what are the correct descriptions below? (multiple choice)

A. When the trunk port receives the frame, if the frame does not contain the 802.1Q tag header, the PVID
of the port will be marked.

B. When the trunk port receives the frame, if the frame contains the 802.1Q tag header, it does not change.

C. When a trunk port sends a frame, when the VLAN ID of the frame is different from the PVID of the
port, direct transmission is transparent.

D. When a trunk port sends a frame, when the VLAN ID of the frame is the same as the PVID of the port,
the tag operation is not performed.

Answer: A B C

Question #:102

Tracert records the () of each ICMP TTL timeout message, so that the user can provide the IP address through
which the message arrived at the destination.

A. Destination port

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B. Source port

C. Source IP address

D. Destination IP address

Answer: C

Question #:103

Huawei low-end switch, the default port type is ()

A. Access

B. Trunk

C. Hybrid

D. Dot1q-tunnel

Answer: A

Question #:104

Firewall generally needs to detect which scanning behavior () (multiple choice)

A. Port-scan

B. icmp-scan

C. udp-scan

D. tcp-synflood

Answer: A B C

Question #:105

What is the IP address segment reserved for the self-loop test?

A. 127.0.0.0

B. 130.0.0.0

C. 164.0.0.0

D.

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D. 200.0.0.0

Answer: A

Question #:106

180On the VRP platform, how many OSPF processes can a router enable by default?

A. 1~64

B. 1~1024

C. 1~64512

D. 1~65535

Answer: A

Question #:107

Which of the following is the abbreviation of the ICMP protocol?

A. Internal Control Mail Protocol

B. Intranet Control Message Protocol

C. Internet Connection Message Protocol

D. Internet Control Message Protocol

Answer: D

Question #:108

In the LCP packet, the length of the code field is one byte, which is mainly used to identify the type of the
LCP data packet.

Which of the following is the Configure-Request message, which one?

A. 0x01

B. 0x02

C. 0x03

D. 0x04

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Answer: A

Question #:109

Current OSPF protocol, which versions are supported? (multiple choice)

A. OSPFv1

B. OSPFv2

C. OSPFv3

D. OSPFv4

Answer: B C

Question #:110

PPP data frames cannot be transmitted directly over the link. The transmission of PPP data frames on a serial
link follows the HDLC standard.

A. True

B. False

Answer: A

Question #:111

In the RIP protocol, what is the parameter for calculating the cost value?

A. MTU

B. Delay

C. Bandwidth

D. Route hop count

Answer: D

Question #:112

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What are the advantages of link aggregation? (multiple choice)

A. Improve link bandwidth

B. Traffic load sharing

C. Dynamic backup of members of the same group

D. Routing backup

Answer: A B C

Question #:113

Which of the following statements about DR in an OSPF network is correct? (multiple choice)

A. There must be a DR in an OSPF area.

B. DR must be negotiated between routers in accordance with the provisions of the agreement

C. Only the router with the highest priority in the network can become the DR.

D. DR is selected only in NBMA or broadcast networks.

Answer: B D

Question #:114

Subnetting is in the () part of the IP address.

A. Network segment address

B. Host address

C. Subnet segment

D. Default subnet mask

Answer: B

Question #:115

For the configuration of a VLAN port, what is the correct option described below?

A. When a port is removed from a VLAN other than the default VLAN, the port will be added to the
default VLAN.

B. When adding a port that has been configured to another VLAN to another VLAN, you must first remove

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B.
the port from the original VLAN by using the configuration command.

C. You can configure a trunk port to this VLAN when you configure the port that belongs to the VLAN
using the port command in the VLAN view.

D. In the VLAN view, you can use the undo port command to delete the port of the default VLAN 1.

Answer: A

Question #:116

Regarding VRRP, is the following statement correct?

A. The master sends VRRP packets periodically. If the backup does not receive packets for a long time, the
status is changed to Master.

B. Backup sends VRRP packets periodically. If the master receives the packets from the backup, the master
compares the priorities and determines whether the status is set to Master or Backup.

C. If there are multiple backups, the election priority will be the new master according to the VRRP
packets sent.

D. In the backup fault-tolerant protocol, there is also an HSRP protocol. This protocol is identical except
that the packet structure is different from VRRP.

Answer: A

Question #:117

Adding a shielding layer on the outside of the twisted pair, called (), can improve the anti-electromagnetic
interference capability of the twisted pair.

A. STP

B. UTP

C. BTP

D. RPR

Answer: A

Question #:118

What are the coaxial cables that can be divided according to their diameter? (multiple choice)

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A. Thick coaxial cable

B. Long coaxial cable short coaxial cable

C. Short and thin coaxial cable

D. Thin coaxial cable

Answer: A D

Question #:119

I will assign you a Class C IP network 192.16.24.0. After dividing 7 subnets, what is the maximum number of
hosts per subnet?

A. 30

B. 31

C. 32

D. 33

E. 34

Answer: A

Question #:120

When a collision occurs in a network using CSMA/CD, what happens to the host that needs to transmit data
after the expiration time expires?

A. The host resumes the pre-transmission listening mode.

B. The host that caused the conflict sends data first.

C. The host causing the collision retransmits the last 16 frames.

D. The host extends its delay time for fast transfer.

Answer: A

Question #:121

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In which of the following cases, ICMP error report message is not sent? (multiple choice)

A. The body of the ICMP error report

B. All subsequent datagrams for the first fragmented datagram

C. Datagrams with multicast addresses

D. Datagram for special address 10.0.0.0

Answer: A B C

Question #:122

The .IP header contains an 8-bit Type of Service (TOS) field. Which of the following are the TOS fields?
(Multiple choice)

A. 3bit COS field

B. 1bit minimum delay

C. 1bit maximum throughput

D. 2bit maximum reliability

Answer: A B C

Question #:123

The following description of the characteristics of the LAN, is it incorrect?

A. High transmission efficiency and good reliability

B. Simple structure and convenient construction

C. Flexible layout and easy expansion

D. Wide coverage

Answer: D

Question #:124

A switch that uses STP, its one port goes from the learning state to the forwarding state to go through a
forwarding delay. By default, how many seconds is the forwarding delay?

A.

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A. 10

B. 15

C. 20

D. 30

Answer: B

Question #:125

In the STP calculation, when the port is in the following options, the data frame is not forwarded, and the
MAC address table is not learned.

In this state, the port receives and processes STP packets, but does not send STP packets.

A. Listening

B. Blocking

C. Learning

D. Forwarding

Answer: B

Question #:126

The international professional organization responsible for allocating IP addresses divides several network
segments into private network segments, which can be freely allocated and used by people on the private
network. Which of the following network segments that are not private addresses?

A. 10.0.0.0/8

B. 172.16.0.0/12

C. 192.168.0.0/16

D. 224.0.0.0/8

Answer: D

Question #:127

What types of networks does OSPF support? (multiple choice)

A.

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A. Point to point

B. Point to more points

C. Bus type

D. Broadcast type

Answer: A B D

Question #:128

When using the tracert program to test the path through which the target node passes, the default is to measure
each TTL value Traceroute () times.

A. 3

B. 4

C. 5

D. 6

Answer: A

Question #:129

Which of the following options is used in the device, marking the entry of Ethernet into the maturity of
development?

A. Twisted pair

B. Coaxial electric shaft

C. Single mode fiber

D. Multimode fiber

Answer: A

Question #:130

In the frame relay network, what are the correct descriptions about the bandwidth control parameters?
(multiple choice)

A.

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A. CIR is the rate of user information transmission agreed by the network and the user, that is, the
committed information rate.

B. Bc is the amount of data that the network allows users to transmit at CIR rate Tc intervals. They are
related to Tc=Bc/CIR.

C. Be is the amount of data that the network allows users to transmit more than Bc during the Tc interval.

D. If the user transmits information at a rate less than or equal to CIR, the transmission of this part of
information should be guaranteed.

Answer: A B C D

Question #:131

Which of the following steps does the basic OSPF configuration include? (multiple choice)

A. Enable OSPF process

B. Create an OSPF area

C. Specify the network segments included in each region

D. Configure the router to be IR or BR.

Answer: A B C

Question #:132

What is the network address of the network segment where the IP address 195.233.27.13/16 is located?

A. 190.0.0.0

B. 190.233.0.0

C. 190.233.27.0

D. 190.233.27.1

Answer: B

Question #:133

When the MSTP protocol is enabled, which of the following conditions do the bridges belong to the same
MSTP domain? (multiple choice)

A.

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A. Turn on root protection at the same time

B. Have the same domain name

C. The number of ports in the forwarding state is the same.

D. The mapping between the VLAN and the instance is consistent.

Answer: B D

Question #:134

What are the main functions of Reverse Address Resolution Protocol (Inverse ARP)? (multiple choice)

A. Find the hardware address of the device through the network address of the network device

B. Find the connected DLCI number

C. Find the protocol address of the peer device connected to the virtual circuit in the frame relay network.

D. Generating the mapping of the peer protocol address and DLCI in the frame relay network

Answer: C D

Question #:135

Which of the following is the correct description of the mesh structure? (multiple choice)

A. In a fully connected mesh network, n(n-1)/2 physical links are required to connect n devices.

B. In a fully connected mesh network, if one link fails, it will not affect the entire system.

C. Fully connected network is more robust

D. The cost of a fully connected network is low and easy to implement

Answer: A B C

Question #:136

Which of the following technologies is used to implement point-to-multipoint data transmission in IPTV?

A. Unicast

B. Broadcast

C. Multicast

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D. Anycast

Answer: C

Question #:137

During the PPP negotiation process, if no response packet is received from the peer within the interval of the
negotiation timeout, PPP will resend the previously sent packet. Such as Configure-Request.

By default, how many seconds does the PPP negotiation timeout?

A. 1

B. 2

C. 3

D. 4

Answer: C

Question #:138

What is the correct statement about the size of the IP network subnet address space? (multiple choice)

A. The subnet space must meet the actual needs, and there must be some redundancy to ensure scalability.

B. Since the IP address borrowing and other technical means can be used, in order to save the IP address,
the subnet space size should generally be smaller than the actual needs.

C. The size of the subnet space should be as large as 2 to facilitate the implementation of various strategies.

D. The above statements have some truth, but they cannot be applied in engineering practice.

Answer: A C

Question #:139

The requirements for OSPF protocol deployment in network planning are correct (multiple choice)? (multiple
choice)

A. Select the IP address of the loopback0 interface as the router ID.

B. Select a high-performance router as the DR/BDR in the network segment.

C. Ensure that the backbone area (Area 0) is physically continuous and does not use virtual links

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C.
(Virtual-link).

D. Select a device with high-performance processor memory in the network as the ABR

Answer: A B C D

Question #:140

In the default state of Huawei routers, what is the priority of common routing protocols, from high to low?

A. direct > OSPF >ISIS >RIP

B. OSPF >ISIS >RIP >direct

C. RIP >ISIS >OSPF >direct

D. direct >ISIS >OSPF >RIP

Answer: A

Question #:141

When the traffic shaping parameters are configured on the outbound interface and the PVC, the configuration
with a small CIR value takes effect. That is, if the CIR value of the PVC is smaller than the CIR value of the
outbound interface, the traffic shaping parameters of the PVC take effect.

A. True

B. False

Answer: A

Question #:142

Pause frames can be used for full-duplex networks for flow control. How is it sent?

A. Unicast

B. Broadcast

C. Multicast

D. Anycast

Answer: C

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Question #:143

Which of the following devices work at the physical layer?

A. Switch

B. Hub

C. Router

D. Firewall

Answer: B

Question #:144

Which of the following options does the Tracert command use to determine the route from one host to another
on the network? (multiple choice)

A. DSCP field

B. TTL field

C. ICMP timeout message

D. ICMP destination unreachable message

Answer: B C

Question #:145

Assuming that there is an IP address of 190.5.6.1 and a subnet mask of 255.255.252.0, what is the network
segment and subnet broadcast address of the IP address?

A. 190.5.4.0 190.5.7.255

B. 190.5.4.0 190.5.4.255

C. 190.5.4.0 190.5.4.254

D. 190.5.1.0 190.5.1.255

Answer: A

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Question #:146

If you need to log in to the device through Telnet or SSH, you need to configure a Telnet/SSH user.

A. True

B. False

Answer: A

Question #:147

The firewall does not provide detection for encrypted data or for data in tunnels that traverse it.

A. True

B. False

Answer: A

Question #:148

The following statement about the message used by LCP for link layer parameter negotiation is wrong?

A. Configure-Request: The first packet that appears in the link layer negotiation process. The packet
indicates that the peer-to-peer negotiation of link layer parameters begins.

B. Configure-Ack: Receives a Configure-Request packet from the peer. If the value of the negotiated
parameter is fully accepted, the packet responds.

C. Configure-Nak: Receives the Configure-Request packet sent by the peer. If the value of the negotiated
parameter is not recognized by the local end, the packet is sent and the configuration parameters
acceptable to the local end are received.

D. Configure-Reject: Sends a Configure-Request packet from the peer. If the value of the negotiated
parameter is not recognized by the local end, the packet is sent and carries the configuration parameters
acceptable to the local end.

Answer: D

Question #:149

In order to expand the network range, what equipment can I use to connect multiple cables, recover the
distorted signal, and amplify the signal?

A. Hub

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B. Repeater

C. Switch

D. Router

Answer: B

Question #:150

In the IGP protocol, there are multiple different paths to a destination. These paths have the same path
overhead. In the routing table, are these routes called?

A. Equivalent routing

B. Suboptimal routing

C. Multipath routing

D. Default route

Answer: A

Question #:151

What is the network structure that all sites are connected to on the public transmission medium?

A. Bus type

B. Tree type

C. Ring

D. Net type

Answer: A

Question #:152

Which of the following is the abbreviation for VRP?

A. Versatile Routine Platform

B. Virtual Routing Platform

C.

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C. Virtual Routing Plane

D. Versatile Routing Platform

Answer: D

Question #:153

When the network topology changes, if the best path to the destination IP is no longer available, the dynamic
routing protocol can adapt to the network change and determine the best path to the destination IP.

A. True

B. False

Answer: A

Question #:154

Which of the following options is used to view the route that IP datagrams pass from one host to another?

A. FTP

B. Tracert

C. ICMP

D. Telnet

Answer: B

Question #:155

If the data link layer protocol is PPP, you can configure the static route without the next hop.

A. True

B. False

Answer: A

Question #:156

Which of the following is not the main function of OSPF Hello messages ()

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A. Discovering neighbors

B. Negotiation parameters

C. Election of DR/BDR

D. Negotiating the master

Answer: D

Question #:157

For RIP, metric equals () is unreachable.

A. 12

B. 15

C. 16

D. No restrictions

Answer: C

Question #:158

177. For the network 172.168.16.0 MASK 255.255.252.0, the largest of the available host IPs is?

A. 172.168.16.254

B. 172.168.17.254

C. 172.168.18.254

D. 172.168.19.254

Answer: D

Question #:159

What is the correct statement about the use of split horizon technology for distance vector routing protocols?
(multiple choice)

A. Avoid routing loops between adjacent routers

B.

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B. Ensure that routing information is no longer sent to the interface that receives the routing information
during routing information transmission.

C. Work in conjunction with the route suppression (holddown) mechanism to avoid routing loops to a
certain extent.

D. Instead of the poison reverse algorithm

Answer: A B C

Question #:160

Which of the following are the characteristics of TCP? (multiple choice)

A. Applicable to applications that are more concerned with transmission efficiency

B. Connection oriented

C. High overhead

D. No connection

Answer: B C

Question #:161

hich network does the L2 switch connect to?

A. Conflict domain

B. Broadcast domain

C. Administrative domain

D. Autonomous domain

Answer: B

Question #:162

TFTP?

A. SIP

B. UDP

C.

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C. TCP

D. RTP

Answer: B

Question #:163

Port mirroring refers to copying a specific service data, transmitting it to a monitoring device, and then
performing mirror data analysis, which is generally used for traffic observation and fault location.

Which of the following can be port mirroring? (multiple choice)

A. Port-based mirroring

B. Application-based mirroring

C. Stream-based mirroring

D. Image based on the upper layer protocol

Answer: A C

Question #:164

What is the telephone exchange system? (single choice)

A. Circuit switching

B. Message exchange

C. Packet switching

D. Handshake

Answer: A

Question #:165

When two routers perform LSDB database synchronization, which of the following messages is used to
describe their own LSDB?

A. Hello

B. DD

C.

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C. LSR

D. LSU

Answer: B

Question #:166

The router sends the ICMP() message to the host, letting the host know that the datagram should be sent to
another router next time.

A. Redirect

B. Timestamp response

C. Router inquiry

D. The destination station is unreachable

Answer: A

Question #:167

What are the duplex modes supported by the Ethernet electrical port? (multiple choice)

A. Full duplex

B. Half duplex

C. Simplex

D. Auto-negotiation

Answer: A B D

Question #:168

The IP address 191.10.196.132 uses a natural mask. What is the network address of 191.10.196.132?

A. 191.0.0.0

B. 191.10.0.0

C. 191.10.48.0

D. 191.10.96.0

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Answer: B

Question #:169

When a frame is forwarded, it is determined whether the Ethernet frame can be forwarded from the port by
checking whether the VLAN tag carried in the Ethernet packet is the port ().

A. Allow to be forwarded from the port.

B. Allowed labels

C. Default PVID

D. MAC address correspondence

E. STP disable status

Answer: A

Question #:170

What are the advantages of SSH compared to Telnet? (multiple choice)

A. All transmitted data can be encrypted to avoid "man in the middle" attack

B. Ability to prevent DNS and IP spoofing

C. The transmitted data is compressed, so it can speed up the transmission.

D. Based on UDP connection, suitable for large-scale use

Answer: A B C

Question #:171

Which of the following IPs may be broadcast addresses if the subnet mask is not clear? (multiple choice)

A. 199.32.59.1

B. 199.32.59.3

C. 199.32.59.191

D. 199.32.59.192

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Answer: B C

Question #:172

The protocol converges quickly and uses the link bandwidth to calculate the best route to the destination
network segment. It is commonly used in routing protocols for medium and large networks. What are the
options? (multiple choice)

A. BGP

B. OSPF

C. ISIS

D. RIP

Answer: B C

Question #:173

Which layer is responsible for converting unreliable transmission channels into reliable transmission channels,
transmitting data frames with parity, and using error control and frame sequential control functions?

A. Physical layer

B. Data link layer

C. Network layer

D. Transport layer

Answer: B

Question #:174

What is the network address and broadcast address of the network segment where the IP address 190.5.4.2 /22
is located?

A. 190.5.4.0, 190.5.7.255

B. 190.5.4.0, 255.255.255.255

C. 190.5.0.0, 190.5.4.255

D. 190.5.4.0, 190.5.4.255

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Answer: A

Question #:175

VRP uses a componentized software framework, what are the benefits? (multiple choice)

A. Component replaceable

B. Components can be reused

C. Component distribution

D. Business smooth upgrade

Answer: A B C

Question #:176

Which of the following is true about the flag field in the HDLC frame? (multiple choice)

A. The fixed value is 01111110

B. Start and end of the flag field flag frame

C. Two flag fields are required between the two frames at the beginning of the frame and at the end of the
frame.

D. The channel is still active at the time of no frame transmission. In this state, the sender continuously
sends the flag field, and the receiver detects each received flag field.

Answer: A B D

Question #:177

Fragmentation can occur on the original sender host or on the intermediate router.

After sharding an IP datagram, which of the following cases will be reassembled?

A. When the message is looped back

B. Next router

C. Intermediate router

D. Message destination

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Answer: D

Question #:178

Which parameters must be specified to configure a static MAP in a Frame Relay package? (multiple choice)

A. Local DLCI

B. Peer DLCI

C. Local protocol address

D. The protocol address of the peer

Answer: A D

Question #:179

Link state routing protocol, which factors will usually be considered to calculate the route to the destination
network segment?

A. Hops to the destination address

B. Manually specified next hop address

C. Link bandwidth resource information

D. Whether the outgoing interface of the route aggregates the port

Answer: C

Question #:180

The default vlan of a switch port is called PVID. What is the default PVID value?

A. 0

B. 1

C. 1029

D. 4095

Answer: B

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Question #:181

When using the tracert program to test the path through which the target node passes, how many times does
each TTL value Traceroute have to be measured?

A. 3

B. 4

C. 6

D. 8

Answer: A

Question #:182

TCP is a reliable connection-oriented protocol for connection. Which of the following mechanisms is used to
guarantee the reliability of transmission? (multiple choice)

A. Acknowledgement mechanism

B. Buffering

C. Source quench messages (source quench messages)

D. Retransmit mechanism

Answer: A D

Question #:183

Which of the following statements about the distance vector algorithm are wrong? (multiple choice)

A. Distance vector algorithm does not generate routing loop problems

B. The routing protocol using the distance vector algorithm is implemented by passing routing information.

C. The distance vector representation of the routing information is (target network, cost)

D. The router running the distance vector protocol only gets information from its neighbors.

Answer: A C

Question #:184

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What are the main technologies of the firewall ()? (multiple choice)

A. Simple packet filtering technology

B. State detection packet filtering technology

C. Application proxy technology

D. Application proxy technology

E. Address translation technology

Answer: A B C D E

Question #:185

Which of the following techniques must be supported to complete route aggregation?

A. VLSM

B. CIDR

C. NAT

D. DNS

Answer: B

Question #:186

After the PPP connection is established, how many seconds does the VRP platform send Echo-Request
packets every second?

A. 1

B. 5

C. 10

D. 60

Answer: C

Question #:187

When the port of Hybridrid sends a message, what are the following statements correctly? (multiple choice)

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A. Hybrid port can implement packet stripping label sending in multiple VLANs.

B. When the Hybrid port and the trunk port send data, the processing method is the same.

C. Hybrid port does not contain VLAN tag for sending data.

D. The data sent by the Hybrid port may have a VLAN 1 tag.

Answer: A D

Question #:188

Which of the following storage media are commonly used by Huawei routers? (multiple choice)

A. SDRAM

B. NVRAM

C. Flash

D. Hard Disk

E. CF Card

Answer: A B C E

Question #:189

In the RSTP standard, ports that are directly connected to the terminal rather than to other bridges are defined
as edge ports. Which of the following is the correct description of the edge ports? (multiple choice)

A. Do not participate in RSTP operations

B. Only need to go through a forwarding delay to enter the forwarding state

C. The port will not receive the configuration BPDU under normal conditions.

D. The port connected to the non-switch is the edge port.

Answer: A C

Question #:190

In PPP, when both ends of the communication side detect the physical line activation, they will transition from
the link unavailability phase to the link establishment phase. In this phase, which of the following protocols is

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used to configure the link parameters?

A. IP

B. DHCP

C. LCP

D. NCP

Answer: C

Question #:191

Regarding the IP host address, which of the following statements is correct?

A. The host part can be all 1

B. The network segment can be all 1 or all 0

C. The network segment cannot be all 1 or all 0.

D. The host part can be all 0

Answer: C

Question #:192

Given a subnet address of 5.32.0.0 and a subnet mask of 255.224.0.0, what is the highest host address allowed
in this subnet?

A. 5.32.255.254

B. 5.255.255.254

C. 5.63.255.254

D. 5.54.255.255

Answer: C

Question #:193

Directly connected to the specified port of the peer device, does not forward any packets, but which port is the
port that receives BPDUs to monitor network changes?

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A. Root Port

B. Designated Port

C. Alternate Port

D. Disable Port

Answer: C

Question #:194

Is the VLAN an abbreviation for which of the following options?

A. virtual local area network

B. virtual long area network

C. virtual local area networking

D. virtual long area networking

Answer: A

Question #:195

Which level of the protocol is the DHCP protocol belonging to the OSI reference model?

A. Physical layer

B. Data link layer

C. Network layer

D. Application layer

Answer: D

Question #:196

Which of the following options is used to verify the entire ICMP message?

A. Inspection and field of ICMP messages

B.

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B. Inspection of the IP datagram header

C. Code field of ICMP message

D. Type field of ICMP packet

Answer: A

Question #:197

A classful route update means that the RIP carries the subnet mask information when sending a route update.

A. True

B. False

Answer: B

Question #:198

The first layer to the first layer of the OSI reference model is called the lower layer, responsible for the
transmission of data in the network?

A. II

B. Three

C. Four

D. Five

Answer: B

Question #:199

In the Eudemon firewall, what are the principles for the association between the security zone and each
network? (Multiple choice)

A. The internal network should be arranged in a higher security area

B. The external network should be arranged in the lowest security area

C. Some networks that provide conditional services to the outside should be placed in a medium-sized
DMZ zone.

D. The internal network should be arranged in the medium DMZ area

E.

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E. The external network should have a Trust zone

Answer: A B C

Question #:200

Is the Flag field in the PFP frame on the serial link usually filled with content?

A. 0x7E

B. 0xFF

C. 0xFE

D. 0x03

Answer: B

Question #:201

What are the correct statements about the ARP and RARP protocols? (multiple choice)

A. ARP maps MAC to IP address

B. RARP maps the IP address corresponding to the MAC address

C. RARP maps IP numbers to MAC addresses

D. ARP maps the IP address to the corresponding MAC address.

Answer: B D

Question #:202

Which of the following standardization organizations is RFC (Request pest For Comments) generated?

A. IEEE

B. ITU-T

C. IETF

D. ISO

Answer: C

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Question #:203

What level of functionality is addressing and routing in the OSI reference model?

A. Physical layer

B. Data link layer

C. Network layer

D. Application layer

Answer: C

Question #:204

Among the following IP addresses, which IPs can't be obtained by a PC via DHCP? (multiple choice)

A. 224.0.0.1

B. 10.0.1.128/25

C. 169.254.136.228

D. 12.2.2.3/30

Answer: A B D

Question #:205

What is the correct statement about the alternate route? (multiple choice)

A. Do not join the global routing table

B. Does not guide the forwarding of data

C. After the primary route fails, it will be promoted to the primary route and added to the global routing
table.

D. Direct data forwarding with the primary route

Answer: A B C

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Question #:206

120. Which of the following commands can be used by users at the visit level? (multiple choice)

A. ping

B. tracert

C. display current-configuration

D. TFTP

Answer: A B

Question #:207

Which of the following commands is used to display basic information about all in-position devices, including
information about the power module and fan module ()?

A. display device [pic-status I slot-id]

B. display cpu-usage [configuration I sorted][slave I slot slot-id]

C. display health

D. display memory-usage [slave I slot slot-id [vcpu vcpu-number]]

Answer: A

Question #:208

In the same LAN, A sends a packet to the B host. What is the source IP address of the packet?

A. Host A's IP address

B. Host B's IP address

C. Host A's gateway IP address

D. Host B's gateway IP address

Answer: A

Question #:209

The computer automatically obtained the address 169.254.136.228, what are the following statements correct?

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(multiple choice)

A. This is a unicast address

B. Get this IP to communicate with other hosts

C. is a reserved address, indicating that no available DHCP server is found on the network.

D. This is a private address

Answer: A C

Question #:210

TCP uses PDUs (Protocol Data Units) to exchange information between different layers. Which of the
following is correct? (multiple choice)

A. The PDU of the transport layer is called Packet.

B. The PDU at the network layer is called Packet.

C. The PDU of the data link layer is called Segment

D. The data frame is transferred to the physical layer and converted into a bit stream.

E. PDUs are given different names in different layers

Answer: B D E

Question #:211

The two Quidway routers are directly connected to each other through the serial interface. The link layer
protocol is encapsulated in PPP. The IP addresses of the two ends of the link are not in the same network
segment.

A. True

B. False

Answer: A

Question #:212

Which of the following techniques is used to convert a private network address to a public network address?

A.

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A. NAT

B. DNS

C. FTP

D. HTTP

Answer: A

Question #:213

In a computer system, what can be collectively referred to as data? (multiple choice)

A. Number

B. Voice

C. Graphics

D. Display

E. Letters

Answer: A B C E

Question #:214

What is the correct statement about free ARP? (multiple choice)

A. By sending a free ARP, you can confirm whether the IP address has a conflict.

B. The free ARP packet format belongs to the AR request packet.

C. Free ARP helps update old IP address information

D. The free ARP packet format belongs to the ARP reply packet.

Answer: A B

Question #:215

In the configuration command RTA-Serial0] ip address 10.1.1.1 30, what is the meaning of the number 30?

A. Peer logical channel number

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B. Local DLCI number

C. Peer interface number

D. Peer node number

Answer: B

Question #:216

The following () command enables the authentication password for Telnet login on the router to be Huawei.

A. [Quidway-ui-vty0-5] set authentication password Huawei

B. [Quidway-ui-vty0-5] set authentication password simple Huawei

C. [Quidway-ui] set authentication password Huawei

D. [Quidway-ui] set authentication password simple Huawei

Answer: B

Question #:217

What are the common WAN interfaces? (multiple choice)

A. V.35 interface

B. ATM interface

C. Ethernet interface

D. FR interface

Answer: A B D

Question #:218

On the VRP platform, direct routing, static routing, RIP, and OSPF are sorted according to the default route
priority from high to low.

A. Direct route, static route, RIP, OSPF

B. Direct routing, OSPF, static routing, RIP

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C. Direct routing, OSPF, RIP, static routing

D. Direct routing, RIP, static routing, OSPF

Answer: B

Question #:219

Which of the following two types of interfaces can the switch be? (multiple choice)

A. MDI

B. MDI_S

C. MDI_X

D. MDI_R

Answer: A C

Question #:220

In the OSPF routing protocol, is there a way to solve the problem that the non-backbone area and the backbone
area cannot be directly connected?

A. Setting up ABR

B. Setting up ASBR

C. Setting up a virtual connection

D. Set the STUB area

Answer: C

Question #:221

The main function of the network layer is achieved through the IP protocol, including? (multiple choice)

A. IP addressing

B. IP routing

C. Forwarding of data frames

D. Bit stream forwarding

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Answer: A B

Question #:222

The firewall must log the traffic logs that pass, but there can be no records for the rejected traffic.

A. True

B. False

Answer: B

Question #:223

You can customize the security zone on the USG9300. In the domain configuration view, you need to
configure the following security zones for the customized security zone. (Multiple choice)

A. Set security priority

B. Add interface

C. Set the IP address

D. Set up an ARP proxy

Answer: A B

Question #:224

The protocol of the link layer encapsulation on the point-to-point connection line mainly includes PPP and
HDLC.

However, the HDLC protocol only supports the synchronous mode, and the PPP protocol supports both the
synchronous and asynchronous transmission modes.

A. True

B. False

Answer: A

Question #:225

The switch supports the 802.1Q protocol. What is the vlan range?

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A. (0,255)

B. (0, 1023)

C. (0, 2047)

D. (0,4095)

Answer: D

Question #:226

Since the FR virtual circuit is connection-oriented and the different local DLCIs are connected to different
peer devices, the local DLCI can be considered as the "frame relay address" of the peer device.

A. True

B. False

Answer: A

Question #:227

When a router calculates routing information, what are the routing protocols calculated using link

overhead and other information? (multiple choice)

A. IS-IS

B. BGP

C. RIP

D. OSPF

Answer: A D

Question #:228

Regarding the characteristics of the OSPF protocol, what are the following statements correct? (multiple
choice)

A. Support flat network design

B. Routing changes converge fast

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C. Support multiple equal-cost routes

D. Support authentication of protocol packets

Answer: B C D

Question #:229

Which of the following protocol messages use the LLC sublayer? (multiple choice)

A. FTP

B. TFTP

C. ISIS

D. STP

Answer: C D

Question #:230

The following may result in the inability to establish an adjacency relationship between OSPF routers?
(multiple choice)

A. The interface network segment is inconsistent

B. Ethernet or NBMA network interface priority is all zero

C. Timer parameters are inconsistent

D. The same router ID

Answer: A B C D

Question #:231

Site A and Site B are connected to the two ports of the switch respectively. When Site A sends a data packet to
Site B for the first time, which of the following statements is correct?

A. The switch learned the address of A

B. The switch learned the address of B

C. The switch did not learn any address

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D. The switch learns the addresses of A and B at the same time.

Answer: A

Question #:232

The following description of the advantages of the three-layer exchange is correct?

A. Based on hardware packet forwarding, low latency, low cost

B. Based on package forwarding, low latency, high cost

C. Based on package forwarding, low latency, low cost

D. Based on hardware packet forwarding, high latency, low cost

Answer: A

Question #:233

When the interface is running in RIPv2 broadcast mode, what messages can it receive? (multiple choice)

A. RIPv1 broadcast message

B. RIPv1 multicast packet

C. RIPv2 broadcast message

D. RIPv2 multicast packet

Answer: A C

Question #:234

The performance parameters of the firewall include ()? (multiple choice)

A. Throughput

B. Maximum number of connections

C. New connections per second

D. Processing delay

Answer: A B C

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Question #:235

Which of the following fields are included in the routing table? (multiple choice)

A. Source address

B. Next hop

C. Target network

D. Routing metrics

Answer: B C D

Question #:236

Which of the following devices are working at the network layer?

A. Hub

B. Bridge

C. Switch

D. Router

Answer: D

Question #:237

Huawei routers can update system files through FTP and TFTP. Which of the following is correct? (multiple
choice)

A. Huawei router can be used as FTP client

B. Huawei router can be used as FTP server

C. Huawei router can be used as TFTP client

D. Huawei router can be used as TFTP Server

Answer: A B C

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Question #:238

Stateful Inspection Firewall Firewall dynamically determines the flow of packets by detecting connection
status based on TCP/UDP connections and application layer protocol information, and monitoring
connection-based application layer protocol status.

A. True

B. False

Answer: B

Question #:239

In the OSI reference model, which of the following options is composed of service requests and responses
between applications in different devices?

A. Data link layer

B. Session layer

C. Network layer

D. Application layer

Answer: B

Question #:240

Which of the following statements about the exchange mode of the Ethernet switch are correct? (multiple
choice)

A. Store and Forward mode does not detect framing errors

B. Cut-through mode, the switch starts to forward the frame after receiving the first 64 bytes of a frame.

C. Fragment-free mode detects errors in the first 64 bytes of the frame

D. Store and Forward mode discards frames with a total length of less than 64 bytes.

Answer: C D

Question #:241

Which of the following protocols is used for port 20?

A. telnet

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B. FTP

C. DNS

D. DHCP

Answer: B

Question #:242

The port-based VLAN ID of the switch takes the value. If the switch receives an untagged frame, the value of
the VLAN ID depends on the value.

A. BPDU

B. AVID

C. MAC mapping table

D. IP address

Answer: B

Question #:243

Network protocols are diverse and are now the most widely used, and have become the standard protocol for
the Internet?

A. TCP/IP

B. IPX

C. SNA

D. SPX

Answer: A

Question #:244

Which of the following are the message types of the LMI protocol? (multiple choice)

A. Link Integrity Verification Only message

B. Full Status message

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C. Status Enquiry message

D. Asynchronous PVC Asynchronous Status (Single PVC Asynchronous Status) message

E. Status message

Answer: C E

Question #:245

How many layers does the OSI reference model divide into networks?

A. 3

B. 5

C. 6

D. 7

Answer: D

Question #:246

Which of the following statements about OSPF are correct? (multiple choice)

A. Support for classless inter-domain routing CIDR

B. Using distance vector algorithm

C. Use triggered update, if the network topology changes, send update packets immediately, and
synchronize this change in the autonomous system

D. Supports sending protocol packets by multicast address

Answer: A C D

Question #:247

How does Hub work?

A. Simplex

B. Half duplex

C.

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C. Full duplex

D. Auto-negotiation

Answer: B

Question #:248

What is the number of network bits for a Class C IP address?

A. 8

B. 14

C. 16

D. 24

Answer: C

Question #:249

The parameter blackhole in the static route configuration command indicates?

A. Unreachable routing

B. Black hole routing

C. Routing loop

D. Route iteration

Answer: B

Question #:250

Regarding the IP routing, the following correct ()? (multiple choice)

A. Routing is the third layer concept in the OSI model

B. IP routing is the path information that guides IP packet forwarding.

C. Any route must include the following three parts: source address, destination address, and next hop.

D. In the LAN, the route includes the following two parts: IP address and MAC address.

Answer: A B

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Question #:251

What is the role of the ppp peer hostroute-suppress command?

A. Turn off the PPP host route learning function.

B. Enable the function of requesting the IP address from the peer

C. Enable the function of accepting the remote request IP address

D. Enable the function of statically assigning IP addresses.

E. None of the above

Answer: A

Question #:252

Which of the following protocols can be used for file transfer? (multiple choice)

A. FTP

B. TFTP

C. Xmodem

D. icmp

Answer: A B C

Question #:253

In STP calculation, if the root path cost of two ports of a non-root switch is the same, which one is the
following description correct?

A. Both ports are root ports

B. Compare the switch identifiers of the upstream switches connected to the two ports. The smaller the
priority, the higher the priority.

C. Compare the port IDs of the two ports, the smaller the priority

D. Compare the priority of these two ports, the smaller the priority

Answer: B

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Question #:254

E1 is the European communication standard. How many channels are used to transmit data and transmission
control signaling?

A. 23B+D

B. 30B+D

C. 23B+2D

D. 23B+2D

Answer: B

Question #:255

Which of the following technologies is to aggregate multiple ports together to form an aggregation group to
implement load sharing of the ingress/egress load in each member port?

It also provides higher connection reliability.

A. Port aggregation

B. Port binding

C. Port load balancing

D. Port group

Answer: A

Question #:256

When the data link layer of the router receives the length of the packet sent by the upper layer is greater than
the maximum MTU of the interface that the router sends the packet, the strategy adopted is?

A. Drop the message

B. Fragment the message

C. Send a request to the source router to reduce its message size

D. Forward the message directly

Answer: B

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Question #:257

Which component of the VRP platform does user authentication and accounting and user policy management
belong to?

A. Business Control Plane

B. Universal control plane

C. System management plane

D. The above is not correct

Answer: A

Question #:258

Which of the following selections of objects in the top indicates that Ethernet has entered a mature stage of
development?

A. Twisted pair

B. Coaxial electric shaft

C. Single mode fiber

D. Multimode fiber

Answer: A

Question #:259

The type field of an ICMP packet is 8. The code field is 0. Which type of packet does ICMP represent?

A. Echo request message

B. Echo response message

C. Timeout message

D. Destination unreachable message

Answer: A

Question #:260

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Regarding the TTL field of the IP packet header, what are the following statements correct? (multiple choice)

A. The maximum possible value of TTL is 65535

B. Under normal circumstances, the router should not receive packets with TTL=0 from the interface.

C. TTL is mainly to prevent the cyclic forwarding of IP packets in the network, wasting network
bandwidth.

D. Each time a IP packet passes through a network device, including Hub, LAN SWITCH, and router, the
TTL value is subtracted from a certain value.

Answer: B C

Question #:261

Which of the following is not the bottom layer of the OSI reference model?

A. Physical layer

B. Data link layer

C. Transport layer

D. Network layer

Answer: C

Question #:262

What is the device responsible for authenticating, authorizing, and assigning an IP address to a user in a
metropolitan area network?

A. SSLAM

B. SWITCH

C. BRAS

D. Router

Answer: C

Question #:263

When multiple private IP addresses are mapped to a public IP address, how do you distinguish the traffic of

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different private IP addresses?

A. IP address

B. Port number

C. Process number

D. Serial number

Answer: B

Question #:264

According to the principle of STP protocol, all ports of the root switch are ()

A. Root port

B. Backup port

C. Designated port

D. Blocking the port

Answer: C

Question #:265

What is the link between the switch and the switch?

A. Access link

B. Trunk link

C. Hybrid link

D. ISL link

Answer: B

Question #:266

In the non-backbone area, the route is injected into the ASBR. The route is 10.1.0.0/24-10.1.3.0/24. The
summary route is 192.168.0.0/23. The ABR will advertise the routes to other areas. ()?

A.

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A. A summary route

B. Four detailed routes

C. A summary of four details

D. No hair

Answer: B

Question #:267

The following description of the advantages of optical fiber as a transmission medium, what are the correct
ones? (multiple choice)

A. Not susceptible to interference from electromagnetic signals

B. High transmission rate

C. The transmission distance is infinitely long

D. Expensive

Answer: A B D

Question #:268

Which module in the figure below is an SFP optical interface connector?

A. 1

B. 2

C. 3

D. 4

Answer: C

Question #:269

What kinds of frame types does HDLC have? (multiple choice)

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A. Information frame

B. Monitoring frame

C. Unnumbered frames

D. Retransmission frame

Answer: A

Question #:270

Which of the following options is used to define the Ethernet subinterface 0.1.1 as a member of VLAN 100?

A. [Router-Ethernet0/1.1]vlan trunk vid 100

B. [Router-Ethernet0/1.1]port dotlq vid 100

C. [Router-Ethernet0/1.1]vlan dotlq vid 100

D. [Router-Ethernet0/1.1]vlan default vid 100

Answer: C

Question #:271

Which of the following is incorrect about the Learning state in the Spanning Tree Protocol?

A. The port in the Learning state can send and receive BPDUs.

B. The port in the Learning state can learn the source MAC address of the packet.

The port in the learning state only learns the source MAC address and does not forward data packets.

C. The port in the Learning state can forward some data packets.

Answer:

Question #:272

172. DHCP establishes and maintains a UDP connection between the PC client and the DHCP server, so that
the client PC automatically obtains a temporarily fixed IP address.

A. True

B. False

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Answer: A

Question #:273

What are the TCI (Tag Control Information) fields in the VLAN tag? (Multiple choice)

A. Priority

B. CFI

C. VLAN Identifier

D. TPID

Answer: A B C

Question #:274

In a Frame Relay network, if a packet is blocked on a PVC, which field does Frame Relay advertise to the
source?

A. CLP

B. BECN

C. FECN

D. TCP

Answer: B

Question #:275

Which of the following options can be used to display the current running status and configuration information
of RIP?

A. show #rip

B. show rip

C. display rip

D. display this rip

Answer: C

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Question #:276

Use the ping program to test the path through which the target node passes.

A. True

B. False

Answer: B

Question #:277

Which of the following network segments are private addresses? (multiple choice)

A. 10.0.0.0/8

B. 172.16.0.0/12

C. 192.168.0.0/16

D. 224.0.0.0/8

Answer: A B C

Question #:278

What are the common methods in VLAN-based partitioning? (multiple choice)

A. Port-based VLAN

B. VLAN based on MAC address

C. VLAN based on protocol

D. Divide VLAN based on TCP port number

Answer: A B C

Question #:279

On the port running Frame Relay, the MAP table corresponds to the logical interface, and the different logical
interfaces have different MAP tables.

A. True

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B. False

Answer: A

Question #:280

Which commands can be used to view the configuration information of interface Serial 1/0/1? (multiple
choice)

A. [Quidway] display current-configuration

B. [Quidway-Serial1/0/1] display this

C. [Quidway] view saved-configuration

D. [Quidway] show current-configuration

Answer: A B

Question #:281

IP address 192.168.1.130, where the broadcast address of the network segment is 192.168.1.255, what are the
mask lengths? (multiple choice)

A. 24

B. 25

C. 26

D. 27

Answer: A B

Question #:282

Which of the following is the correct description of the configuration BPDU generation? (multiple choice)

A. As long as the port is enabled with STP, the configuration BPDU will be sent from the designated port
at regular intervals.

B. When the root port receives the configuration BPDU, the device where the root port resides will copy a
configuration BPDU to each of its designated ports.

C. When the designated port receives a configuration BPDU that is worse than itself, it will immediately

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C.
send its own BPDU to the downstream device.

D. The topology of the non-root bridge changes. The BPDU is notified by configuring the BPDU.

Answer: A B C

Question #:283

The link aggregation can implement traffic load balancing by configuring different weights for each member
link. Load sharing is divided into flow-by-flow load sharing and packet-by-packet load sharing.

Which of the following statements is correct?

A. Flow-by-flow load sharing does not guarantee the order of packets, nor does it guarantee bandwidth
utilization.

B. Packet-by-packet load sharing guarantees bandwidth utilization, but does not guarantee the order of
packets.

C. Flow-by-flow load sharing guarantees the order of packets and also ensures bandwidth utilization.

D. Packet-by-packet load sharing guarantees bandwidth utilization and guarantees the order of packets.

Answer: B

Question #:284

After the device is patched, you need to restart the device.

A. True

B. False

Answer: B

Question #:285

When the network fails, which of the following originated routes cannot be automatically corrected, and the
administrator needs to reconfigure it?

A. Link discovered by the link layer

B. Static routing

C. Dynamic routing

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D. All routes

Answer: B

Question #:286

For such a network segment 192.168.2.16/28, how many hosts can I accommodate?

A. 16

B. 8

C. 15

D. 14

E. 7

Answer: D
Question #:287

What is the initial IP address used by the DHCP client before applying for a new IP address?

A. 0.0.0.0

B. 127.0.0.1

C. 255.255.255.255

D. 169.254.1.1

Answer: A

Question #:288

What is the role of the firewall in the security system?

A. Intrusion Detection System

B. Access control

C. Vulnerability lookup

D. System immunity

Answer: B

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Question #:289

The firewall acts as an intermediate node for business access. For the Client, the firewall is a server. For the
server, the firewall is a client called a firewall.

A. Packet filtering firewall

B. Proxy firewall

C. Stateful inspection firewall

D. Application gateway firewall

Answer: B

Question #:290

The IP network is layered. Usually, the network composed of interconnections between different countries and
different cities refers to the following one?

A. Backbone network

B. Metropolitan Area Network

C. Access network

D. Core network

Answer: A

Question #:291

Which of the following commands should I use to observe the routing table on the Quidway router?

A. display ip path

B. display ip routing-table

C. display interface

D. display current-configuration

Answer: B

Question #:292

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What kind of data encapsulation method does OSPF use as an application layer protocol?

A. Encapsulated by the transport layer, UDP port number hop

B. Encapsulated by IP, protocol number 89

C. Encapsulated by the transport layer, TCP port number 89

D. Directly run above the data link layer

Answer: B

Question #:293

Which of the following is the Ethernet_II frame structure?

A. Source MAC destination MAC protocol type data FCS

B. Destination MAC source MAC protocol type data FCS

C. Source MAC destination MAC packet length data FCS

D. Destination MAC source MAC packet length data FCS

Answer: B

Question #:294

One-arm routing implements VLAN interworking. The number of router sub-interfaces depends on the
number of VLANs that are accessed.

A. True

B. False

Answer: A

Question #:295

RIP (Routing Information Protocol) protocol, based on which algorithm is used to implement routing
calculation?

A. D-V algorithm

B. SPI algorithm

C.

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C. Shortest path force priority algorithm

D. Link state algorithm

Answer: A

Question #:296

Which of the following types of ports can implement VLAN tag stripping and forwarding? (multiple choice)

A. Access

B. Trunk

C. Hybrid

D. Norma

Answer: A B C

Question #:297

Each routing protocol corresponds to a routing priority. What is the priority range?

A. 1-1024

B. 0-255

C. 0-256

D. 0-1024

Answer: B

Question #:298

Which of the following protocols gives users a way to log in to a remote server over the network?

A. telnet

B. tracert

C. ping

D. ftp

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Answer: A

Question #:299

Which of the following statements about HDLC are correct? (multiple choice)

A. In terms of system structure, HDLC is only suitable for point-to-point structures.

B. HDLC is suitable for half-duplex or full-duplex in terms of working mode

C. In terms of transmission mode, HDLC is only used for synchronous transmission.

D. In terms of transmission rate, HDLC is often used for medium and high speed transmission.

Answer: B C D

Question #:300

IEEE 802.1P standard development?

A. VLAN tag

B. VLAN priority

C. VLAN ID

D. TPID

Answer: B

Question #:301

Which of the following devices are working at the network layer?

A. Hub

B. Bridge

C. Switch

D. Router

Answer: B C

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Question #:302

Each OSPF router advertises LSAs to the outside through the flooding link state. Which ones are included?
(multiple choice)

A. Available ports

B. reachable neighbors

C. Information about neighboring routers

D. Local link status information

Answer: A B D

Question #:303

In the HDLC frame format, which frame format determines the type of HDLC frame?

A. Flag field

B. Address field

C. Control field

D. Information field

Answer: C

Question #:304

The routing protocol defines the communication rules between routers.

A. True

B. False

Answer: A

Question #:305

RIPv1 packets have a maximum routing entry limit. Does the router send more than one route update message
at a time?

Then multiple RIP v1 messages must be generated.

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A. 15

B. 16

C. 25

D. 90

Answer: C

Question #:306

Which of the following is the standard set by IEEE802.3z/ab?

A. Ethernet standard

B. Fast Ethernet standard

C. Gigabit Ethernet standard

D. 10GE Ethernet standard

Answer: C

Question #:307

What information is usually included in the IP routing table? (multiple choice)

A. Destination network address

B. Source address

C. Outlet

D. Next hop address

Answer: A C D

Question #:308

Which of the following pictures is fiber?

A. 1

B.
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B. 2

C. 3

D. 4

Answer: D

Question #:309

For such network segments: 172.128.12.0, 172.128.17.0, 172.128.18.0, 172.128.19.0, which of the following
network segments is best used to implement route summarization?

A. 172.128.0.0/21

B. 172.128.0.0/19

C. 172.128.12.0/22

D. 172.128.20.0/20

Answer: B

Question #:310

Which of the following are the ways of flow control? (multiple choice)

A. Acknowledgement technology

B. Buffering technology

C. Source quench messages (source quench messages)

D. Window mechanism (windowing)

Answer: B C D

Question #:311

When a redundant path occurs in a Layer 2 switched network, what method can be used to prevent loop
generation and improve network reliability?

A.

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A. Spanning Tree Protocol

B. Horizontal segmentation

C. Toxicity reversal

D. Shortest path tree

Answer: A

Question #:312

In the VRP system platform, output such an error Error: Unrecognized command found at '^' position, which
are the possible reasons? (multiple choice)

A. The parameter type is wrong.

B. No command found

C. Input command is incomplete

D. No keywords found

Answer: B D

Question #:313

Which of the following is the correct description of NAT? (multiple choice)

A. NAT is the abbreviation of Yingyin Address Translation

B. Address translation, also known as address translation, is used to convert between private and public
network addresses.

C. When the host of the internal network accesses the external network, NAT is not required.

D. Address translation proposed to provide an effective way to solve the problem of IP address tension

Answer: A B D

Question #:314

Which of the following application layer protocols is based on UDP?

A. FTP

B.

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B. Telnet

C. TFTP

D. HTTP

Answer: C

Question #:315

When the router forwards data (without address translation), which of the following items have not been
changed in forwarding? (multiple choice)

A. Source network address

B. Destination network address

C. Source MAC address

D. Destination MAC address

E. Source port number

F. destination port number

Answer: A B E F

Question #:316

Which of the following messages belong to ICMP messages? (multiple choice)

A. Name request message

B. Timestamp response message

C. Router inquiry message

D. Router Advertisement message

Answer: B C D

Question #:317

If there is a routing loop in the network, then the packet will be forwarded on the loop link until the loop is
eliminated.

A. True

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B. False

Answer: B

Question #:318

The MAC address consists of 48 binary bits. Which of the following options is assigned by the vendor itself?

A. Top 16bit

B. After 16bit

C. Top 24bit

D. After 24bit

Answer: C

Question #:319

By default, the Eudemon firewall corrects the priority of each zone from high to low.

A. Local>DMZ>Trust>Untrust

B. Trust>DMZ>Local>Untrust

C. Local>Trust>DMZ>Untrust

D. Trust>Local>DMZ>Untrust

Answer: C

Question #:320

After the switch receives the complete data frame, it performs a CRC check. After the check is passed, the
frame is forwarded. What is the forwarding mode called?

A. Cut-Through

B. Store-and-Forward

C. Fragment-free

D. Store-free

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Answer: B

Question #:321

In the Eudemon firewall, how many interfaces can a security domain associate with?

A. 0

B. 1

C. 1029

D. 65536

Answer: C

Question #:322

The network administrator has purchased a new Eudemon firewall. I want it to work on the current network,
but I can't change the current network configuration. At this time, what mode should he use to make the
Eudemon firewall work?

A. Routing mode

B. Transparent mode

C. Mixed mode

D. Proxy mode

Answer: B

Question #:323

In the single-area network running OSPF, what are the following descriptions for the LSDB and routing table?
(multiple choice)

A. The link state database LSDB obtained by each router is the same.

B. The link state database LSDB obtained by each router is different.

C. The routing table obtained by each router is different.

D. The routing table obtained by each router is the same.

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Answer: A C

Question #:324

How many insulated copper wires are discharged together and then twisted together in a regular way to form a
twisted pair?

A. 2

B. 3

C. 8

D. 16

Answer: A

Question #:325

When the switch receives a data frame with a VLAN and there is no corresponding MAC record in the MAC
entry, what happens to the switch?

A. Discard

B. Broadcast to all ports

C. Broadcast within the VLAN identified by the data

D. Not processed

Answer: C

Question #:326

Which of the following options does the IP address use to distinguish between the network part and the host
part?

A. Mask

B. Unicast

C. Broadcast

D. MAC address

Answer: A

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Question #:327

What are the following descriptions of shared Ethernet defects? (multiple choice)

A. Serious conflict

B. Broadcast flooding

C. Poor security

D. Carrier sensing

Answer: A B C

Question #:328

After the data is transmitted over the network, the receiving device deletes the added information and decides
how to upload the data along the protocol stack to the appropriate application according to the information in
the header. This process is called decapsulation.

A. True

B. False

Answer: A

Question #:329

The device that runs the STP protocol uses the configuration message BPDU (Bridge Protocol Data Unit).
What are the old PDUs that can be classified? (Multiple choice)

A. STP BPDU

B. Configure BPDUs

C. TCN BPDU

D. Election BPDU

E. IP address of the switch

Answer: B C

Question #:330

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What are the correct functions of the functions implemented on VRP? (multiple choice)

A. Achieve a unified user interface and management interface

B. Implement control plane functions

C. Defining the forwarding plane interface specification

D. Prevent the interaction between the forwarding plane and the VRP control plane

Answer: A B C

Question #:331

Which of the following topologies has a central control point, and the communication between devices is a
point-to-point connection?

A. Ring

B. Bus

C. Star

D. Tree shape

Answer: C

Question #:332

In VRP, what are the following statements about RIP route aggregation?

A. RIP V1 supports route aggregation by default. You can disable route aggregation when needed.

B. RIP V2 supports off route aggregation.

C. RIP V1 does not support CIDR

D. RIP V2 supports subnet route aggregation

Answer: B C D

Question #:333

A company applies for a Class B IP address segment, but to connect 121 subsidiaries. The largest subsidiary
has 250 computers. Each subsidiary is in a network segment. The subnet mask can be set to which of the
following options. (multiple choice)

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A. 255.255.254.0

B. 255.255.255.0

C. 255.255.255.128

D. 255.255.255.224

Answer: A B

Question #:334

On the Eudemon firewall, NAT is enabled. What are the functions of NAT? (Multiple choice)

A. Save public IP address

B. Protecting private networks

C. Facilitating network consolidation

D. Improve access efficiency

Answer: A B C

Question #:335

Which of the following statements about Frame Relay is correct? (multiple choice)

A. DLCI is only valid on the local interface and the peer interface directly connected to it.

B. PVC is a virtual connection that can only be established between DCEs

C. The frame relay address mapping table stores the mapping relationship between the peer IP address and
the DLCI of the next hop.

D. The reverse address resolution protocol can obtain the corresponding DLCI through the peer IP.

Answer: A C

Question #:336

The MRU indicates the maximum value of the data field of the PPP data frame received by the local end. In
general, how many bytes is this parameter option using the default value?

A.

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A. 1492

B. 1500

C. 4700

D. 9600

Answer: B

Question #:337

What is the network address of the network segment where 183.79.24.51/20 is located?

A. 183.79.24.0

B. 183.79.16.0

C. 183.79.0.0

D. 183.79.1.0

Answer: B

Question #:338

What is the interface type of .10BASE-T twisted pair?

A. RJ11

B. RJ23

C. RJ45

D. R755

Answer: C

Question #:339

According to the working mode of the Eudemon firewall, it can be divided into three types, which are
respectively? (multiple choice)

A. Routing mode

B. Transparent mode

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C. Mixed mode

D. Proxy mode

Answer: A B C

Question #:340

Which of the following protocols is used to transfer files that make up a page on the World Wide Web?

A. TCP

B. UDP

C. DNS

D. HTTP

Answer: D

Question #:341

The following is true about the routing self-loop description in an OSPF network?

A. Route self-loop has been eliminated in the OSPF area.

B. There is no route self-loop between OSPF areas.

C. The routing self-loop is not eliminated in the OSPF autonomous system.

D. There is no self-loop in the external route of the OSPF autonomous system.

Answer: A

Question #:342

What is the meaning of the "-m" parameter in the Ping function of the VRP platform?

A. Set the number of times to send a message

B. Set the length of the sent message

C. Set the interval between sending messages

D. Set the timeout period of the packet

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Answer: C

Question #:343

Which of the following statements about VRRP is correct? (multiple choice)

A. Under normal circumstances, the business is all undertaken by the Master.

B. When the Master fails, the Backup device takes over the work.

C. VRRP can only monitor the interface status of VRRP.

D. VRRP can implement active/standby backup and cannot implement load balancing.

Answer: A B

Question #:344

The Frame Relay network provides the ability to communicate data between user equipments. Which types of
equipment and interface types are classified as follows? (multiple choice)

A. DIE

B. UNI

C. DTE

D. DCE

Answer: B C D

Question #:345

When a router that enables proxy ARP receives an ARP request packet, it finds that the destination address of
the packet is not its own. Which operation is required? (Multiple selection)

A. Discard the message

B. Find the route to the destination address

C. If there is a route to the destination address, send its own MAC address to the ARP requester.

D. Broadcast ARP request message

Answer: B C

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Question #:346

When RIPv1 sends a packet, which method can I use to send the packet?

A. Unicast

B. Multicast

C. Broadcast

D. Multicast and broadcast

Answer: C

Question #:347

On the VRP platform, what is the command to set the data link layer encapsulation type to HDLC on the
Serial port?

A. encapsulation hdlc

B. link-protocol hdlc

C. hdlc enable

D. link-protocol ppp

Answer: B

Question #:348

What are the types of ICMP messages? (multiple choice)

A. ICMP transmission message

B. ICMP error report message

C. ICMP inquiry message

D. ICMP application message

Answer: B C

Question #:349

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Which of the following TCP/IP models does the G.703 standard related to the WAN belong to?

A. Physical layer

B. Data link layer

C. Transport layer

D. Application layer

Answer: A

Question #:350

On the VRP platform, which of the following is the command to delete a VLAN?

A. undo vlan

B. vlan undo

C. delete vlan

D. vlan delete

Answer: A

Question #:351

What are the methods to solve the routing loop problem?

A. Horizontal segmentation

B. Route suppression method

C. Router restart

D. Define the maximum value of the route metric

Answer: A B D

Question #:352

The network administrator is removing multiple VLANs from the switch. When the administrator enters the
undo vlan 1 command, he receives an error message.

What is the cause of the error message?

A. VLAN can only be deleted by the user who created it

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B. VLAN 1 can be deleted only after the role of VLAN 1 is assigned to other VLANs.

C. The command was not entered correctly, resulting in a syntax error

D. VLAN 1 is the default management VLAN and cannot be deleted.

Answer: D

Question #:353

Which method of authentication is supported in the RIPv1 seal text?

A. Clear text

B. Ciphertext

C. MD5 ciphertext verification

D. Does not support authentication

Answer: D

Question #:354

On the Quidway router, which of the following commands can change the name of the router to Router1?

A. [Quidway] name Router1

B. [Quidway] hostname Router1

C. [Quidway] sysname Router1

D. [Ouidway] routername Router1

Answer: C

Question #:355

When you need to change the metric of the route sent by RIP to increase by 5, while keeping the local
corresponding route metric unchanged, which command should you use?

A. [RTA-Serial0/0/0]rip metricout 5

B. [RTA]rip metricout 5

C.

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C. [RTA]rip metricin 5

D. [RTA-Serial0/0/0]rip metricin 5

Answer: A

Question #:356

The switch is based on which of the following options is used for data forwarding?

A. Source MAC address

B. Destination MAC address

C. Source IP address

D. Destination IP address

Answer: B

Question #:357

What is the role of the port type Dot1q_tunnel on the switch?()

A. Vlan ID translation

B. Vlan ID replacement

C. Vlan ID overlay (QinQ)

D. Delete the Vlan ID

Answer: C

Question #:358

The two Huawei low-end switches communicate through the aggregation port. Which of the following factors
must be consistent? (Multiple choice)

A. Number of links to be aggregated

B. The number of the port to be aggregated

C. Duplex mode of the aggregated link

D. STP, QoS, VLAN related configuration

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Answer: A C D

Question #:359

Network interconnection devices are often located below and below the OSI reference model, implemented in
a combination of hardware and software.

A. One

B. Three

C. Four

D. Five

Answer: B

Question #:360

As long as the static route is manually configured, will this static route always exist in the routing table?

A. True

B. False

Answer: B

Question #:361

When a company applies to the 192.168.1.0/24 network segment, the largest sub-company that needs to be
assigned to 5 subsidiaries has 8 computers. In each network segment, what are the following subnet mask
digits? (multiple choice)

A. 26

B. 27

C. 28

D. 29

Answer: B C

Question #:362

In order to check whether the serial port s0/1 on the Quidway router works in DTE or DCE mode, which of the

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following commands should be used?

A. display controller serial

B. display saved-config

C. display interface s0/1

D. display current-config

Answer: C

Question #:363

In the OSI model, which of the following is the correct description of the physical layer function?

A. Ensure that the data is transmitted correctly.

B. Determine how packets are forwarded and routed

C. Transmitting the bit stream on the channel

D. Error correction and flow control

Answer: C

Question #:364

Which command can be used to display the mapping between network address and DLCI on the Quidway
router?

A. display fr interface

B. display fr

C. display fr map-info

D. display fr brief

Answer: C

Question #:365

It is known that the mask of a network is 255.255.248.0, then what belongs to the same network segment?

A. 10.110.16.1 and 10.110.25.1

B.

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B. 10 .76 .129.21 and 10.76.137.1

C. 10.52.57.34 and 10.52.62.2

D. 10.33.23.2 and 10.33.31.1

Answer: C

Question #:366

192.168.1.1 and 192.168.1.251 are on the same network segment.

A. True

B. False

Answer: B

Question #:367

What is the priority of the priority field in the VLAN tag?

A. 1

B. 3

C. 4

D. 8

Answer: B

Question #:368

Which Telnet protocol is used for data transmission?

A. RTP

B. SIP

C. UDP

D. TCP

Answer: D

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Question #:369

The sender of the data communication system cannot be the receiver.

A. True

B. False

Answer: B

Question #:370

Which of the following protocols are part of the OSI Reference Model Presentation Layer Protocol? (multiple
choice)

A. ASCII, EBCDIC

B. IP, ARP

C. MAC, LLC

D. MPEG, MIDI

E. RPC, NFS, SQL

F. PICT, MPEG

Answer: A D F

Question #:371

RlP protocol, in the RIPV2 version, which address is sent by default to the update message?

A. 224.0.0.2

B. 224.0.0.9

C. 224.0.0.5

D. 224.0.0.13

Answer: B

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Question #:372

Which of the following is the standard for Fast Ethernet?

A. IEEE802.3

B. IEEE802.3u

C. IEEE802.3z/ab

D. IEEE802.3ae

Answer: B

Question #:373

Which type of port can implement VLAN tag stripping and forwarding? (multiple choice)

A. Access

B. Trunk

C. Hybrid

D. Norma

Answer: A B C

Question #:374

What are the protocols that will not be used in the TRACERT process? (multiple choice)

A. TCP

B. UDP

C. ICMP

D. ARP

Answer: A D

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