Cisco 100-101

Cisco Interconnecting Cisco Networking Devices Part

1 (ICND)
Version: 12.0
 Cisco 100-101 Exam
Topic 1, Operation of IP Data Networks

QUESTION NO: 1

Which three statements are true about the operation of a full-duplex Ethernet network? (Choose
three.)

A. There are no collisions in full-duplex mode.

B. A dedicated switch port is required for each full-duplex node.
C. Ethernet hub ports are preconfigured for full-duplex mode.
D. In a full-duplex environment, the host network card must check for the availability of the network
media before transmitting.
E. The host network card and the switch port must be capable of operating in full-duplex mode.

Answer: A,B,E
Explanation:

QUESTION NO: 2 DRAG DROP

Answer:

Explanation:

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QUESTION NO: 3

Which OSI layer header contains the address of a destination host that is on another network?

A. application
B. session
C. transport
D. network
E. data link
F. physical

Answer: D
Explanation:

QUESTION NO: 4

Which layer of the TCP/IP stack combines the OSI model physical and data link layers?

A. Internet layer
B. transport layer
C. application layer
D. network access layer

Answer: D
Explanation:

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QUESTION NO: 5

Which protocol uses a connection-oriented service to deliver files between end systems?

A. TFTP
B. DNS
C. FTP
D. SNMP
E. RIP

Answer: C
Explanation:

QUESTION NO: 6

Refer to the exhibit.

If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

A. broadcast domains
B. repeater domains
C. Ethernet collisions

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 Cisco 100-101 Exam
D. signal amplification
E. Ethernet broadcasts

Answer: C
Explanation:

QUESTION NO: 7

Refer to the exhibit.

If host A sends an IP packet to host B, what will the source physical address be in the frame when
it reaches host B?

A. 10.168.10.99
B. 10.168.11.88
C. A1:A1:A1:A1:A1:A1
D. B2:B2:B2:B2:B2:B2
E. C3:C3:C3:C3:C3:C3
F. D4:D4:D4:D4:D4:D4

Answer: E
Explanation:

QUESTION NO: 8

Refer to the exhibit.

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HostX is transferring a file to the FTP server. Point A represents the frame as it goes toward the
Toronto router. What will the Layer 2 destination address be at this point?

A. abcd.1123.0045
B. 192.168.7.17
C. aabb.5555.2222
D. 192.168.1.1
E. abcd.2246.0035

Answer: E
Explanation:

QUESTION NO: 9

Which network device functions only at Layer 1 of the OSI model?

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 Cisco 100-101 Exam

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E

Answer: B
Explanation:

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 Cisco 100-101 Exam
QUESTION NO: 10

Refer to the exhibit.

The host in Kiev sends a request for an HTML document to the server in Minsk. What will be the
source IP address of the packet as it leaves the Kiev router?

A. 10.1.0.1
B. 10.1.0.5
C. 10.1.0.6
D. 10.1.0.14
E. 10.1.1.16
F. 10.1.2.8

Answer: E
Explanation:

QUESTION NO: 11

Refer to the exhibit.

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 Cisco 100-101 Exam

As packets travel from Mary to Robert, which three devices will use the destination MAC address
of the packet to determine a forwarding path? (Choose three.)

A. Hub1
B. Switch1
C. Router1
D. Switch2
E. Router2
F. Switch3

Answer: B,D,F
Explanation:

QUESTION NO: 12

Refer to the exhibit.

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Mary is sending an instant message to Robert. The message will be broken into a series of
packets that will traverse all network devices. What addresses will populate these packets as they
are forwarded from Router1 to Router2?

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E

Answer: B
Explanation:

QUESTION NO: 13

Refer to the exhibit.

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A network device needs to be installed in the place of the icon labeled Network Device to
accommodate a leased line attachment to the Internet. Which network device and interface
configuration meets the minimum requirements for this installation?

A. a router with two Ethernet interfaces

B. a switch with two Ethernet interfaces
C. a router with one Ethernet and one serial interface
D. a switch with one Ethernet and one serial interface
E. a router with one Ethernet and one modem interface

Answer: C
Explanation:

QUESTION NO: 14

Which transport layer protocol provides best-effort delivery service with no acknowledgment
receipt required?

A. HTTP
B. IP
C. TCP
D. Telnet
E. UDP

Answer: E
Explanation:

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QUESTION NO: 15

Which layer of the OSI model controls the reliability of communications between network devices
using flow control, sequencing and acknowledgments?

A. Physical
B. Data-link
C. Transport
D. Network

Answer: C
Explanation:

QUESTION NO: 16

Which statements are true regarding ICMP packets? (Choose two.)

A. They acknowledge receipt of TCP segments.

B. They guarantee datagram delivery.
C. TRACERT uses ICMP packets.
D. They are encapsulated within IP datagrams.
E. They are encapsulated within UDP datagrams.

Answer: C,D
Explanation:

QUESTION NO: 17

Which statements accurately describe CDP? (Choose three.)

A. CDP is an IEEE standard protocol.

B. CDP is a Cisco proprietary protocol.
C. CDP is a datalink layer protocol.
D. CDP is a network layer protocol.
E. CDP can discover directly connected neighboring Cisco devices.
F. CDP can discover Cisco devices that are not directly connected.

Answer: B,C,E
Explanation:

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QUESTION NO: 18

How does a switch differ from a hub?

A. A switch does not induce any latency into the frame transfer time.
B. A switch tracks MAC addresses of directly-connected devices.
C. A switch operates at a lower, more efficient layer of the OSI model.
D. A switch decreases the number of broadcast domains.
E. A switch decreases the number of collision domains.

Answer: B
Explanation:

QUESTION NO: 19

What must occur before a workstation can exchange HTTP packets with a web server?

A. A UDP connection must be established between the workstation and its default gateway.
B. A UDP connection must be established between the workstation and the web server.
C. A TCP connection must be established between the workstation and its default gateway.
D. A TCP connection must be established between the workstation and the web server.
E. An ICMP connection must be established between the workstation and its default gateway.
F. An ICMP connection must be established between the workstation and the web server.

Answer: D
Explanation:

QUESTION NO: 20

How does TCP differ from UDP? (Choose two.)

A. TCP provides best effort delivery.

B. TCP provides synchronized communication.
C. TCP segments are essentially datagrams.
D. TCP provides sequence numbering of packets.
E. TCP uses broadcast delivery.

Answer: B,D

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Explanation:

QUESTION NO: 21

A workstation has just resolved a browser URL to the IP address of a server. What protocol will
the workstation now use to determine the destination MAC address to be placed into frames
directed toward the server?

A. HTTP
B. DNS
C. DHCP
D. RARP
E. ARP

Answer: E
Explanation:

QUESTION NO: 22

Refer to the exhibit.

Host A is sending a packet to Host B for the first time. What destination MAC address will Host A
use in the ARP request?

A. 192.168.0.1
B. 172.16.0.50
C. 00-17-94-61-18-b0
D. 00-19-d3-2d-c3-b2
E. ff-ff-ff-ff-ff-ff

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F. 255.255.255.255

Answer: E
Explanation:

QUESTION NO: 23

What are two common TCP applications? (Choose two.)

A. TFTP
B. SMTP
C. SNMP
D. FTP
E. DNS

Answer: B,D
Explanation:

QUESTION NO: 24

Refer to the exhibit.

SwitchA receives the frame with the addressing shown. According to the command output also
shown in the exhibit, how will SwitchA handle this frame?

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 Cisco 100-101 Exam
A. It will drop the frame.
B. It will forward the frame out port Fa0/6 only.
C. It will flood the frame out all ports.
D. It will flood the frame out all ports except Fa0/3.

Answer: B
Explanation:

QUESTION NO: 25

Refer to the exhibit.

SwitchA receives the frame with the addressing shown in the exhibit. According to the command
output also shown in the exhibit, how will SwitchA handle this frame?

A. It will drop the frame.

B. It will forward the frame out port Fa0/6 only.
C. It will forward the frame out port Fa0/3 only.
D. It will flood the frame out all ports.
E. It will flood the frame out all ports except Fa0/3.

Answer: E
Explanation:

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 Cisco 100-101 Exam
QUESTION NO: 26

Refer to the exhibit.

The exhibit is showing the topology and the MAC address table. Host A sends a data frame to
host D. What will the switch do when it receives the frame from host A?

A. The switch will add the source address and port to the MAC address table and forward the
frame to host D.
B. The switch will discard the frame and send an error message back to host A.
C. The switch will flood the frame out of all ports except for port Fa0/3.
D. The switch will add the destination address of the frame to the MAC address table and forward
the frame to host D.

Answer: A
Explanation:

QUESTION NO: 27

Which two statements describe the operation of the CSMA/CD access method? (Choose two.)

A. In a CSMA/CD collision domain, multiple stations can successfully transmit data

simultaneously.
B. In a CSMA/CD collision domain, stations must wait until the media is not in use before
transmitting.
C. The use of hubs to enlarge the size of collision domains is one way to improve the operation of
the CSMA/CD access method.
D. After a collision, the station that detected the collision has first priority to resend the lost data.
E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has
expired, all stations have equal priority to transmit data.
F. After a collision, all stations involved run an identical backoff algorithm and then synchronize

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 Cisco 100-101 Exam
with each other prior to transmitting data.

Answer: B,E
Explanation:

QUESTION NO: 28

Refer to the exhibit.

A network has been planned as shown. Which three statements accurately describe the areas and
devices in the network plan? (Choose three.)

A. Network Device A is a switch.

B. Network Device B is a switch.
C. Network Device A is a hub.
D. Network Device B is a hub.
E. Area 1 contains a Layer 2 device.
F. Area 2 contains a Layer 2 device.

Answer: A,D,E
Explanation:

QUESTION NO: 29

On a Cisco switch, which protocol determines if an attached VoIP phone is from Cisco or from
another vendor?

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 Cisco 100-101 Exam
A. RTP
B. TCP
C. CDP
D. UDP

Answer: C
Explanation:

QUESTION NO: 30

Refer to the exhibit.

What must be configured to establish a successful connection from Host A to switch SW-A
through router RT-A?

A. VLAN 1 on RT-A
B. IP routing on SW-A
C. default gateway on SW-A
D. crossover cable connecting SW-A and RT-A

Answer: C
Explanation:

QUESTION NO: 31

At which layer of the OSI model does the protocol that provides the information that is displayed
by the show cdp neighbors command operate?

A. application
B. transport
C. network
D. physical

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 Cisco 100-101 Exam
E. data link

Answer: E
Explanation:

QUESTION NO: 32

Which two characteristics apply to Layer 2 switches? (Choose two.)

A. Increases the number of collision domains

B. Decreases the number of collision domains
C. Implements VLAN
D. Decreases the number of broadcast domains
E. Uses the IP address to make decisions for forwarding data packets

Answer: A,C
Explanation:

QUESTION NO: 33

Which two characteristics describe the access layer of the hierarchical network design model?
(Choose two.)

A. layer 3 support
B. port security
C. redundant components
D. VLANs
E. PoE

Answer: B,D
Explanation:

QUESTION NO: 34

Refer to the topology and switching table shown in the graphic.

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 Cisco 100-101 Exam

Host B sends a frame to Host C. What will the switch do with the frame?

A. Drop the frame

B. Send the frame out all ports except port 0/2
C. Return the frame to Host B
D. Send an ARP request for Host C
E. Send an ICMP Host Unreachable message to Host B
F. Record the destination MAC address in the switching table and send the frame directly to Host
C

Answer: B
Explanation:

QUESTION NO: 35

Refer to the exhibit.

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 Cisco 100-101 Exam

The output is from a router in a large enterprise. From the output, determine the role of the router.

A. A Core router.
B. The HQ Internet gateway router.
C. The WAN router at the central site.
D. Remote stub router at a remote site.

Answer: D
Explanation:

QUESTION NO: 36

To what type of port would a cable with a DB-60 connector attach?

A. Serial port
B. Console port
C. Ethernet port
D. Fibre optic port

Answer: A
Explanation:

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 Cisco 100-101 Exam
QUESTION NO: 37

A network administrator is connecting PC hosts A and B directly through their Ethernet interfaces
as shown in the graphic. Ping attempts between the hosts are unsuccessful. What can be done to
provide connectivity between the hosts? (Choose two.)

A. A crossover cable should be used in place of the straight-through cable.

B. A rollover cable should be used in place of the straight-through cable.
C. The subnet masks should be set to 255.255.255.192
D. A default gateway needs to be set on each host.
E. The hosts must be reconfigured to use private IP addresses for direct connections of this type.
F. The subnet masks should be set to 255.255.255.0

Answer: A,F
Explanation:

QUESTION NO: 38

Refer to the exhibit.

What kind of cable should be used to make each connection that is identified by the numbers
shown?

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 Cisco 100-101 Exam
A. 1 - Ethernet Crossover cable
2 - Ethernet straight-through cable
3 - Fiber Optic cable
4 - Rollover cable
B. 1 - Ethernet straight-through cable
2 - Ethernet straight-through cable
3 - Serial cable
4 - Rollover cable
C. 1 - Ethernet rollover cable
2 - Ethernet crossover cable
3 - Serial cable
4 - Null-modem cable
D. 1 - Ethernet straight-through cable
2 - Ethernet Crossover cable
3 - Serial cable
4 - Rollover cable
E. 1 - Ethernet straight-through cable
2 - Ethernet Crossover cable
3 - Serial cable
4 - Ethernet Straight-through cable

Answer: B
Explanation:

QUESTION NO: 39

Which of the following are types of flow control? (Choose three.)

A. buffering
B. cut-through
C. windowing
D. congestion avoidance
E. load balancing

Answer: A,C,D
Explanation:

Topic 2, LAN Switching Technologies

QUESTION NO: 40

Which two options will help to solve the problem of a network that is suffering a broadcast storm?

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 Cisco 100-101 Exam
(Choose two.)

A. a bridge
B. a router
C. a hub
D. a Layer 3 switch
E. an access point

Answer: B,D
Explanation:

QUESTION NO: 41

A switch receives a frame on one of its ports. There is no entry in the MAC address table for the
destination MAC address. What will the switch do with the frame?

A. drop the frame

B. forward it out of all ports except the one that received it
C. forward it out of all ports
D. store it until it learns the correct port

Answer: B
Explanation:

QUESTION NO: 42

Which address type does a switch use to make selective forwarding decisions?

A. Source IP address
B. Destination IP address
C. Source and destination IP address
D. Source MAC address
E. Destination MAC address

Answer: E
Explanation:

QUESTION NO: 43

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 Cisco 100-101 Exam
Refer to the exhibit.

The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the
switch.

What two operations will the switch perform when it receives this frame? (Choose two.)

A. The switch will not forward a frame with this destination MAC address.
B. The MAC address of 0000.00aa.aaaa will be added to the MAC Address Table.
C. The MAC address of ffff.ffff.ffff will be added to the MAC address table.
D. The frame will be forwarded out all active switch ports except for port fa0/0.
E. The frame will be forwarded out fa0/0 and fa0/1 only.
F. The frame will be forwarded out all the ports on the switch.

Answer: B,D
Explanation:

QUESTION NO: 44

What does a host on an Ethernet network do when it is creating a frame and it does not have the
destination address?

A. Drops the frame

B. Sends out a Layer 3 broadcast message

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 Cisco 100-101 Exam
C. Sends a message to the router requesting the address
D. Sends out an ARP request with the destination IP address

Answer: D
Explanation:

QUESTION NO: 45

A switch has 48 ports and 4 VLANs. How many collision and broadcast domains exist on the
switch (collision, broadcast)?

A. 4, 48
B. 48, 4
C. 48, 1
D. 1, 48
E. 4, 1

Answer: B
Explanation:

QUESTION NO: 46

Refer to the exhibit.

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 Cisco 100-101 Exam
All devices attached to the network are shown. How many collision domains are present in this
network?

A. 2
B. 3
C. 6
D. 9
E. 15

Answer: E
Explanation:

QUESTION NO: 47

Refer to the exhibit.

The ports that are shown are the only active ports on the switch. The MAC address table is shown
in its entirety. The Ethernet frame that is shown arrives at the switch.

What two operations will the switch perform when it receives this frame? (Choose two.)

A. The MAC address of 0000.00aa.aaaa will be added to the MAC address table.

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 Cisco 100-101 Exam
B. The MAC address of 0000.00dd.dddd will be added to the MAC address table.
C. The frame will be forwarded out port fa0/3 only.
D. The frame will be forwarded out fa0/1, fa0/2, and fa0/3.
E. The frame will be forwarded out all the active ports.

Answer: A,D
Explanation:

QUESTION NO: 48

How many simultaneous Telnet sessions does a Cisco router support by default?

A. 1
B. 2
C. 3
D. 4
E. 5
F. 6

Answer: E
Explanation:

QUESTION NO: 49

Refer to the exhibit.

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What two things can the technician determine by successfully pinging from this computer to the IP
address 172.16.236.1? (Choose two)

A. The network card on the computer is functioning correctly.

B. The default static route on the gateway router is correctly configured.
C. The correct default gateway IP address is configured on the computer.

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 Cisco 100-101 Exam
D. The device with the IP address 172.16.236.1 is reachable over the network.
E. The default gateway at 172.16.236.1 is able to forward packets to the internet.

Answer: A,D
Explanation:

QUESTION NO: 50

What is the purpose of flow control?

A. To ensure data is retransmitted if an acknowledgement is not received.

B. To reassemble segments in the correct order at the destination device.
C. To provide a means for the receiver to govern the amount of data sent by the sender.
D. To regulate the size of each segment.

Answer: C
Explanation:

QUESTION NO: 51

Refer to the exhibit.

How many collision domains are shown?

A. one
B. two
C. three
D. four

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 Cisco 100-101 Exam
E. six
F. twelve

Answer: B
Explanation:

Topic 3, IP addressing (IPv4 / IPv6)

QUESTION NO: 52

Which IP addresses are valid for hosts belonging to the 10.1.160.0/20 subnet? (Choose three.)

A. 10.1.168.0
B. 10.1.176.1
C. 10.1.174.255
D. 10.1.160.255
E. 10.1.160.0
F. 10.1.175.255

Answer: A,C,D
Explanation:

QUESTION NO: 53

Given an IP address of 192.168.1.42 255.255.255.248, what is the subnet address?

A. 192.168.1.8/29
B. 192.168.1.32/27
C. 192.168.1.40/29
D. 192.168.1.16/28
E. 192.168.1.48/29

Answer: C
Explanation:

QUESTION NO: 54

Refer to the exhibit.

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The enterprise has decided to use the network address 172.16.0.0. The network administrator
needs to design a classful addressing scheme to accommodate the three subnets, with 30, 40,
and 50 hosts, as shown. What subnet mask would accommodate this network?

A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248
E. 255.255.255.252

Answer: A
Explanation:

QUESTION NO: 55

Which two statements describe the IP address 10.16.3.65/23? (Choose two.)

A. The subnet address is 10.16.3.0 255.255.254.0.

B. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
C. The last valid host address in the subnet is 10.16.2.254 255.255.254.0
D. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.
E. The network is not subnetted.

Answer: B,D
Explanation:

QUESTION NO: 56

Given a Class C IP address subnetted with a /30 subnet mask, how many valid host IP addresses
are available on each of the subnets?

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A. 1
B. 2
C. 4
D. 8
E. 252
F. 254

Answer: B
Explanation:

QUESTION NO: 57

Which one of the following IP addresses is the last valid host in the subnet using mask
255.255.255.224?

A. 192.168.2.63
B. 192.168.2.62
C. 192.168.2.61
D. 192.168.2.60
E. 192.168.2.32

Answer: B
Explanation:

QUESTION NO: 58

What is the subnet address of 172.16.159.159/22?

A. 172.16.0.0
B. 172.16.128.0
C. 172.16.156.0
D. 172.16.159.0
E. 172.16.159.128
F. 172.16.192.0

Answer: C
Explanation:

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QUESTION NO: 59

What is the subnet address for the IP address 172.19.20.23/28?

A. 172.19.20.0
B. 172.19.20.15
C. 172.19.20.16
D. 172.19.20.20
E. 172.19.20.32

Answer: C
Explanation:

QUESTION NO: 60

An administrator is working with the 192.168.4.0 network, which has been subnetted with a /26
mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two.)

A. 192.168.4.61
B. 192.168.4.63
C. 192.168.4.67
D. 192.168.4.125
E. 192.168.4.128
F. 192.168.4.132

Answer: C,D
Explanation:

QUESTION NO: 61

Refer to the exhibit.

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 Cisco 100-101 Exam
The internetwork is using subnets of the address 192.168.1.0 with a subnet mask of
255.255.255.224. The routing protocol in use is RIP version 1. Which address could be assigned
to the FastEthernet interface on RouterA?

A. 192.168.1.31
B. 192.168.1.64
C. 192.168.1.127
D. 192.168.1.190
E. 192.168.1.192

Answer: D
Explanation:

QUESTION NO: 62

What is the network address for the host with IP address 192.168.23.61/28?

A. 192.168.23.0
B. 192.168.23.32
C. 192.168.23.48
D. 192.168.23.56
E. 192.168.23.60

Answer: C
Explanation:

QUESTION NO: 63

The network manager has requested a 300-workstation expansion of the network. The
workstations are to be installed in a single broadcast domain, but each workstation must have its
own collision domain. The expansion is to be as cost-effective as possible while still meeting the
requirements.

Which three items will adequately fulfill the request? (Choose three).

A. One IP subnet with a mask of 255.255.254.0

B. Two IP subnets with a mask of 255.255.255.0
C. Seven 48-port hubs
D. Seven 48-port switches

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 Cisco 100-101 Exam
E. One router interface
F. Seven router interfaces

Answer: A,D,E
Explanation:

QUESTION NO: 64

What is the purpose of assigning an IP address to a switch?

A. provides local hosts with a default gateway address

B. allows remote management of the switch
C. allows the switch to respond to ARP requests between two hosts
D. ensures that hosts on the same LAN can communicate with each other

Answer: B
Explanation:

QUESTION NO: 65

An administrator must assign static IP addresses to the servers in a network. For network
192.168.20.24/29, the router is assigned the first usable host address while the sales server is
given the last usable host address.

Which of the following should be entered into the IP properties box for the sales server?

A. IP address: 192.168.20.14
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.9
B. IP address: 192.168.20.254
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.20.1
C. IP address: 192.168.20.30
Subnet Mask: 255.255.255.248
Default Gateway: 192.168.20.25
D. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240
Default Gateway: 192.168.20.17
E. IP address: 192.168.20.30
Subnet Mask: 255.255.255.240

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Default Gateway: 192.168.20.25

Answer: C
Explanation:

QUESTION NO: 66

Which IP address is a private address?

A. 12.0.0.1
B. 168.172.19.39
C. 172.20.14.36
D. 172.33.194.30
E. 192.169.42.34

Answer: C
Explanation:

QUESTION NO: 67

Which command can you use to manually assign a static IPV6 address to a router interface?

A. ipv6 address PREFIX_1::1/64

B. ipv6 autoconfig 2001:db8:2222:7272::72/64
C. ipv6 autoconfig
D. ipv6 address 2001:db8:2222:7272::72/64

Answer: D
Explanation:

QUESTION NO: 68

Which two of these statements are true of IPv6 address representation? (Choose two.)

A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
B. A single interface may be assigned multiple IPv6 addresses of any type.
C. Every IPv6 interface contains at least one loopback address.
D. The first 64 bits represent the dynamically created interface ID.

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E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

Answer: B,C
Explanation:

QUESTION NO: 69

Which option is a valid IPv6 address?

A. 2001:0000:130F::099a::12a
B. 2002:7654:A1AD:61:81AF:CCC1
C. FEC0:ABCD:WXYZ:0067::2A4
D. 2004:1:25A4:886F::1

Answer: D
Explanation:

QUESTION NO: 70

How many bits are contained in each field of an IPv6 address?

A. 24
B. 4
C. 8
D. 16

Answer: D
Explanation:

QUESTION NO: 71

Which three approaches can be used while migrating from an IPv4 addressing scheme to an IPv6
scheme? (Choose three)

A. static mapping of IPv4 address to IPv6 addresses

B. configuring IPv4 tunnels between IPv6 islands
C. use DHCPv6 to map IPv4 addresses to IPv6 addresses
D. use proxying and translation (NAT-PT) to translate IPv6 packets into IPv4 packets

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E. configure IPv6 directly
F. enable dual-stack routing

Answer: B,D,F
Explanation:

QUESTION NO: 72

Which statement about IPv6 is true?

A. Addresses are not hierarchical and are assigned at random.

B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts.

Answer: D
Explanation:

QUESTION NO: 73

Which command enables IPv6 forwarding on a Cisco router?

A. ipv6 host
B. ipv6 unicast-routing
C. ipv6 local
D. ipv6 neighbor

Answer: B
Explanation:

QUESTION NO: 74

Identify the four valid IPv6 addresses. (Choose four.)

A. ::
B. ::192:168:0:1
C. 2000::
D. 2001:3452:4952:2837::

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E. 2002:c0a8:101::42
F. 2003:dead:beef:4dad:23:46:bb:101

Answer: A,B,E,F
Explanation:

QUESTION NO: 75

Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)

A. Global addresses start with 2000::/3.

B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for the
interface.

Answer: A,D
Explanation:

QUESTION NO: 76

Which statement is true?

A. An IPv6 address is 64 bits long and is represented as hexadecimal characters.

B. An IPv6 address is 32 bits long and is represented as decimal digits.
C. An IPv6 address is 128 bits long and is represented as decimal digits.
D. An IPv6 address is 128 bits long and is represented as hexadecimal characters.

Answer: D
Explanation:

QUESTION NO: 77

If an Ethernet port on a router was assigned an IP address of 172.16.112.1/20, what is the

maximum number of hosts allowed on this subnet?

A. 1024

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B. 2046
C. 4094
D. 4096
E. 8190

Answer: C
Explanation:

QUESTION NO: 78

Which statements are TRUE regarding Internet Protocol version 6 (IPv6) addresses? (Choose
three.)

A. An IPv6 address is divided into eight 16-bit groups.

B. A double colon (::) can only be used once in a single IPv6 address.
C. IPv6 addresses are 196 bits in length.
D. Leading zeros cannot be omitted in an IPv6 address.
E. Groups with a value of 0 can be represented with a single 0 in IPv6 address.

Answer: A,B,E
Explanation:

QUESTION NO: 79

Which of the following IP addresses are valid Class B host addresses if a default Class B mask is
in use? (Choose two.)

A. 10.6.8.35
B. 133.6.5.4
C. 192.168.5.9
D. 127.0.0.1
E. 190.6.5.4

Answer: B,E
Explanation:

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Topic 4, IP Routing Technologies

QUESTION NO: 80

What two things does a router do when it forwards a packet? (Choose two.)

A. switches the packet to the appropriate outgoing interfaces

B. computes the destination host address
C. determines the next hop on the path
D. updates the destination IP address
E. forwards ARP requests

Answer: A,C
Explanation:

QUESTION NO: 81

Refer to the exhibit.

What is the simplest way to configure routing between the regional office network 10.89.0.0/20
and the corporate network?

A. router1(config)#ip route 10.89.0.0 255.255.240.0 10.89.16.2

B. router2(config)#ip route 10.89.3.0 255.255.0.0 10.89.16.2
C. router1(config)#ip route 10.89.0.0 255.255.240.0 10.89.16.1
D. router2(config)#ip route 0.0.0.0 0.0.0.0 10.89.16.1

Answer: D
Explanation:

QUESTION NO: 82

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Refer to the exhibit.

Which command would you use to configure a static route on Router1 to network
192.168.202.0/24 with a nondefault administrative distance?

A. router1(config)#ip route 1 192.168.201.1 255.255.255.0 192.168.201.2

B. router1(config)#ip route 192.168.202.0 255.255.255.0 192.168.201.2 1
C. router1(config)#ip route 5 192.168.202.0 255.255.255.0 192.168.201.2
D. router1(config)#ip route 192.168.202.0 255.255.255.0 192.168.201.2 5

Answer: D
Explanation:

QUESTION NO: 83

What does administrative distance refer to?

A. the cost of a link between two neighboring routers

B. the advertised cost to reach a network
C. the cost to reach a network that is administratively set
D. a measure of the trustworthiness of a routing information source

Answer: D
Explanation:

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QUESTION NO: 84

Which IOS command is used to initiate a login into a VTY port on a remote router?

A. router# login
B. router# telnet
C. router# trace
D. router# ping
E. router(config)# line vty 0 5
F. router(config-line)# login

Answer: B
Explanation:

QUESTION NO: 85

The command ip route 192.168.100.160 255.255.255.224 192.168.10.2 was issued on a router.

No routing protocols or other static routes are configured on the router. Which statement is true
about this command?

A. The interface with IP address 192.168.10.2 is on this router.

B. The command sets a gateway of last resort for the router.
C. Packets that are destined for host 192.168.100.160 will be sent to 192.168.10.2.
D. The command creates a static route for all IP traffic with the source address 192.168.100.160.

Answer: C
Explanation:

QUESTION NO: 86

Which two of these functions do routers perform on packets? (Choose two.)

A. Examine the Layer 2 headers of inbound packets and use that information to determine the
next hops for the packets
B. Update the Layer 2 headers of outbound packets with the MAC addresses of the next hops
C. Examine the Layer 3 headers of inbound packets and use that information to determine the
next hops for the packets
D. Examine the Layer 3 headers of inbound packets and use that information to determine the
complete paths along which the packets will be routed to their ultimate destinations
E. Update the Layer 3 headers of outbound packets so that the packets are properly directed to
valid next hops

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F. Update the Layer 3 headers of outbound packets so that the packets are properly directed to
their ultimate destinations

Answer: B,C
Explanation:

QUESTION NO: 87

Refer to the exhibit.

Which two statements are correct? (Choose two.)

A. This is a default route.

B. Adding the subnet mask is optional for the ip route command.
C. This will allow any host on the 172.16.1.0 network to reach all known destinations beyond
RouterA.
D. This command is incorrect, it needs to specify the interface, such as s0/0/0 rather than an IP
address.
E. The same command needs to be entered on RouterA so that hosts on the 172.16.1.0 network
can reach network 10.0.0.0.

Answer: A,C
Explanation:

QUESTION NO: 88

Refer to the exhibit.

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If CDP is enabled on all devices and interfaces, which devices will appear in the output of a show
cdp neighbors command issued from R2?

A. R2 and R3
B. R1 and R3
C. R3 and S2
D. R1, S1, S2, and R3
E. R1, S1, S2, R3, and S3

Answer: C
Explanation:

QUESTION NO: 89

Refer to the exhibit.

The two routers have had their startup configurations cleared and have been restarted. At a
minimum, what must the administrator do to enable CDP to exchange information between R1 and
R2?

A. Configure the router with the cdp enable command.

B. Enter no shutdown commands on the R1 and R2 fa0/1 interfaces.
C. Configure IP addressing and no shutdown commands on both the R1 and R2 fa0/1 interfaces.
D. Configure IP addressing and no shutdown commands on either of the R1 or R2 fa0/1

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interfaces.

Answer: B
Explanation:

QUESTION NO: 90

Which two commands will display the current IP address and basic Layer 1 and 2 status of an
interface? (Choose two.)

A. router#show version
B. router#show ip interface
C. router#show protocols
D. router#show controllers
E. router#show running-config

Answer: B,C
Explanation:

QUESTION NO: 91

An administrator is in the process of changing the configuration of a router. What command will
allow the administrator to check the changes that have been made prior to saving the new
configuration?

A. Router# show startup-config

B. Router# show current-config
C. Router# show running-config
D. Router# show memory
E. Router# show flash
F. Router# show processes

Answer: C
Explanation:

QUESTION NO: 92

On a live network, which commands will verify the operational status of router interfaces? (Choose
two.)

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A. Router# show interfaces
B. Router# show ip protocols
C. Router# debug interface
D. Router# show ip interface brief
E. Router# show start

Answer: A,D
Explanation:

QUESTION NO: 93

Which router command will configure an interface with the IP address 10.10.80.1/19?

A. router(config-if)# ip address 10.10.80.1/19

B. router(config-if)# ip address 10.10.80.1 255.255.0.0
C. router(config-if)# ip address 10.10.80.1 255.255.255.0
D. router(config-if)# ip address 10.10.80.1 255.255.224.0
E. router(config-if)# ip address 10.10.80.1 255.255.240.0
F. router(config-if)# ip address 10.10.80.1 255.255.255.240

Answer: D
Explanation:

QUESTION NO: 94

Refer to the exhibit.

If the resume command is entered after the sequence that is shown in the exhibit, which router

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prompt will be displayed?

A. Router1>
B. Router1#
C. Router2>
D. Router2#

Answer: C
Explanation:

QUESTION NO: 95

Refer to the exhibit.

Which default gateway address should be assigned to HostA?

A. 192.168.1.1
B. 192.168.1.65
C. 192.168.1.66
D. 192.168.1.129
E. 10.1.1.1
F. 10.1.1.2

Answer: B

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Explanation:

QUESTION NO: 96

Refer to the output of the corporate router routing table shown in the graphic.

The corporate router receives an IP packet with a source IP address of 192.168.214.20 and a
destination address of 192.168.22.3.

What will the router do with this packet?

A. It will encapsulate the packet as Frame Relay and forward it out interface Serial 0/0.117.
B. It will discard the packet and send an ICMP Destination Unreachable message out interface
FastEthernet 0/0.
C. It will forward the packet out interface Serial 0/1 and send an ICMP Echo Reply message out
interface serial 0/0.102.
D. It will change the IP packet to an ARP frame and forward it out FastEthernet 0/0.

Answer: B
Explanation:

QUESTION NO: 97

What is the default administrative distance of the OSPF routing protocol?

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A. 90
B. 100
C. 110
D. 120
E. 130
F. 170

Answer: C
Explanation:

QUESTION NO: 98

To allow or prevent load balancing to network 172.16.3.0/24, which of the following commands
could be used in R2? (Choose two.)

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A. R2(config-if)#clock rate
B. R2(config-if)#bandwidth
C. R2(config-if)#ip ospf cost
D. R2(config-if)#ip ospf priority
E. R2(config-router)#distance ospf

Answer: B,C
Explanation:

QUESTION NO: 99

After the network has converged, what type of messaging, if any, occurs between R3 and R4?

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A. No messages are exchanged
B. Hellos are sent every 10 seconds.
C. The full database from each router is sent every 30 seconds.
D. The routing table from each router is sent every 60 seconds.

Answer: B
Explanation:

QUESTION NO: 100

OSPF is configured using default classful addressing. With all routers and interfaces operational,
how many networks will be in the routing table of R1 that are indicated to be learned by OSPF?

A. 2
B. 3
C. 4
D. 5
E. 6
F. 7

Answer: C
Explanation:

QUESTION NO: 101

R1 is configured with the default configuration of OSPF. From the following list of IP addresses
configured on R1, which address will the OSPF process select as the router ID?

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A. 192.168.0.1
B. 172.16.1.1
C. 172.16.2.1
D. 172.16.2.225

Answer: A
Explanation:

QUESTION NO: 102

ROUTER# show ip route

192.168.12.0/24 is variably subnetted, 9 subnets, 3 masks

C 192.168.12.64 /28 is directly connected, Loopback1

C 192.168.12.32 /28 is directly connected, Ethernet0

C 192.168.12.48 /28 is directly connected, Loopback0

O 192.168.12.236 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0

C 192.168.12.232 /30 is directly connected, Serial0

O 192.168.12.245 /30 [110/782] via 192.168.12.233, 00:35:36, Serial0

O 192.168.12.240 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0

O 192.168.12.253 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0

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O 192.168.12.249 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0

O 192.168.12.240/30 [110/128] via 192.168.12.233, 00:35:36, Serial 0

To what does the 128 refer to in the router output above?

A. OSPF cost
B. OSPF priority
C. OSPF hop count
D. OSPF ID number
E. OSPF administrative distance

Answer: A
Explanation:

QUESTION NO: 103

Which of the following describe the process identifier that is used to run OSPF on a router?
(Choose two)

A. It is locally significant.
B. It is globally significant.
C. It is needed to identify a unique instance of an OSPF database.
D. It is an optional parameter required only if multiple OSPF processes are running on the router.
E. All routers in the same OSPF area must have the same process ID if they are to exchange
routing information.

Answer: A,C
Explanation:

QUESTION NO: 104

Which address are OSPF hello packets addressed to on point-to-point networks?

A. 224.0.0.5
B. 172.16.0.1
C. 192.168.0.5
D. 223.0.0.1
E. 254.255.255.255

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Answer: A
Explanation:

QUESTION NO: 105

Some routers have been configured with default routes. What are some of the advantages of
using default routes? (Choose two)

A. They establish routes that will never go down.

B. They keep routing tables small.
C. They require a great deal of CPU power.
D. They allow connectivity to remote networks that are not in the routing table
E. They direct traffic from the internet into corporate networks.

Answer: B,D
Explanation:

QUESTION NO: 106

Refer to the exhibit.

PC1 pings PC2. What three things will CORE router do with the data that is received from PC1?
(Choose three.)

A. The data frames will be forwarded out interface FastEthernet0/1 of CORE router.
B. The data frames will be forwarded out interface FastEthernet1/0 of CORE router.
C. CORE router will replace the destination IP address of the packets with the IP address of PC2.

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D. CORE router will replace the MAC address of PC2 in the destination MAC address of the
frames.
E. CORE router will put the IP address of the forwarding FastEthernet interface in the place of the
source IP address in the packets.
F. CORE router will put the MAC address of the forwarding FastEthernet interface in the place of
the source MAC address.

Answer: B,D,F
Explanation:

QUESTION NO: 107

Which three statements are correct about RIP version 2? (Choose three)

A. It uses broadcast for its routing updates.

B. It supports authentication.
C. It is a classless routing protocol.
D. It has a lower default administrative distance then RIP version 1.
E. It has the same maximum hop count as RIP version 1.
F. It does not send the subnet mask any updates.

Answer: B,C,E
Explanation:

QUESTION NO: 108

Refer to the exhibit.

Why are two OSPF designated routers identified on Core-Router?

A. Core-Router is connected to more than one multi-access network.

B. The router at 208.149.23.130 is a secondary DR in case the primary fails.
C. Two router IDs have the same OSPF priority and are therefore tied for DR election
D. The DR election is still underway and there are two contenders for the role.

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Answer: A
Explanation:

QUESTION NO: 109

What is the OSPF default frequency, in seconds, at which a Cisco router sends hello packets on a
multi-access network?

A. 10
B. 40
C. 30
D. 20

Answer: A
Explanation:

QUESTION NO: 110

Which parameter or parameters are used to calculate OSPF cost in Cisco routers?

A. Bandwidth
B. Bandwidth and Delay
C. Bandwidth, Delay, and MTU
D. Bandwidth, MTU, Reliability, Delay, and Load

Answer: A
Explanation:

QUESTION NO: 111

Why do large OSPF networks use a hierarchical design? (Choose three.)

A. to decrease latency by increasing bandwidth

B. to reduce routing overhead
C. to speed up convergence
D. to confine network instability to single areas of the network
E. to reduce the complexity of router configuration
F. to lower costs by replacing routers with distribution layer switches

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Answer: B,C,D
Explanation:

QUESTION NO: 112

Refer to the exhibit.

When running OSPF, what would cause router A not to form an adjacency with router B?

A. The loopback addresses are on different subnets.

B. The values of the dead timers on the routers are different.
C. Route summarization is enabled on both routers.
D. The process identifier on router A is different than the process identifier on router B.

Answer: B
Explanation:

QUESTION NO: 113

A router has learned three possible routes that could be used to reach a destination network. One
route is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a
metric of 782. The last is from RIPv2 and has a metric of 4. Which route or routes will the router
install in the routing table?

A. the OSPF route

B. the EIGRP route

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C. the RIPv2 route
D. all three routes
E. the OSPF and RIPv2 routes

Answer: B
Explanation:

QUESTION NO: 114

Refer to the graphic.

R1 is unable to establish an OSPF neighbor relationship with R3. What are possible reasons for
this problem? (Choose two.)

A. All of the routers need to be configured for backbone Area 1.

B. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3.
C. A static route has been configured from R1 to R3 and prevents the neighbor adjacency from
being established.
D. The hello and dead interval timers are not set to the same values on R1 and R3.
E. EIGRP is also configured on these routers with a lower administrative distance.
F. R1 and R3 are configured in different areas.

Answer: D,F
Explanation:

QUESTION NO: 115

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Which command is used to display the collection of OSPF link states?

A. show ip ospf link-state

B. show ip ospf lsa database
C. show ip ospf neighbors
D. show ip ospf database

Answer: D
Explanation:

QUESTION NO: 116

Refer to the exhibit.

A network associate has configured OSPF with the command:

City(config-router)# network 192.168.12.64 0.0.0.63 area 0

After completing the configuration, the associate discovers that not all the interfaces are
participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF
according to this configuration statement? (Choose three.)

A. FastEthernet0 /0
B. FastEthernet0 /1
C. Serial0/0
D. Serial0/1.102
E. Serial0/1.103

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F. Serial0/1.104

Answer: B,C,D
Explanation:

QUESTION NO: 117

Which statements describe the routing protocol OSPF? (Choose three.)

A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates.
F. It is simpler to configure than RIP v2.

Answer: A,C,E
Explanation:

QUESTION NO: 118

What is the default administrative distance of OSPF?

A. 90
B. 100
C. 110
D. 120

Answer: C
Explanation:

QUESTION NO: 119

Refer to the exhibit.

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Given the output for this command, if the router ID has not been manually set, what router ID will
OSPF use for this router?

A. 10.1.1.2
B. 10.154.154.1
C. 172.16.5.1
D. 192.168.5.3

Answer: C
Explanation:

QUESTION NO: 120

Which two statements describe the process identifier that is used in the command to configure
OSPF on a router? (Choose two.)

Router(config)# router ospf 1

A. All OSPF routers in an area must have the same process ID.
B. Only one process number can be used on the same router.
C. Different process identifiers can be used to run multiple OSPF processes
D. The process number can be any number from 1 to 65,535.
E. Hello packets are sent to each neighbor to determine the processor identifier.

Answer: C,D
Explanation:

QUESTION NO: 121

Which commands are required to properly configure a router to run OSPF and to add network
192.168.16.0/24 to OSPF area 0? (Choose two.)

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A. Router(config)# router ospf 0
B. Router(config)# router ospf 1
C. Router(config)# router ospf area 0
D. Router(config-router)# network 192.168.16.0 0.0.0.255 0
E. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0
F. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0

Answer: B,E
Explanation:

QUESTION NO: 122

What is the default maximum number of equal-cost paths that can be placed into the routing table
of a Cisco OSPF router?

A. 2
B. 8
C. 16
D. unlimited

Answer: B
Explanation:

QUESTION NO: 123

A network administrator is trying to add a new router into an established OSPF network. The
networks attached to the new router do not appear in the routing tables of the other OSPF routers.
Given the information in the partial configuration shown below, what configuration error is causing
this problem?

Router(config)# router ospf 1

Router(config-router)# network 10.0.0.0 255.0.0.0 area 0

A. The process id is configured improperly.

B. The OSPF area is configured improperly.
C. The network wildcard mask is configured improperly.
D. The network number is configured improperly.
E. The AS is configured improperly.
F. The network subnet mask is configured improperly.

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Answer: C
Explanation:

QUESTION NO: 124

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The
routers cannot establish an adjacency relationship on their common Ethernet link.

The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.
Based on the information in the graphic, what is the cause of this problem?

A. The OSPF area is not configured properly.

B. The priority on R1 should be set higher.
C. The cost on R1 should be set higher.
D. The hello and dead timers are not configured properly.
E. A backup designated router needs to be added to the network.
F. The OSPF process ID numbers must match.

Answer: D
Explanation:

QUESTION NO: 125

Refer to the exhibit.

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Assume that all router interfaces are operational and correctly configured. In addition, assume that
OSPF has been correctly configured on router R2. How will the default route configured on R1
affect the operation of R2?

A. Any packet destined for a network that is not directly connected to router R2 will be dropped
immediately.
B. Any packet destined for a network that is not referenced in the routing table of router R2 will be
directed to R1. R1 will then send that packet back to R2 and a routing loop will occur.
C. Any packet destined for a network that is not directly connected to router R1 will be dropped.
D. The networks directly connected to router R2 will not be able to communicate with the
172.16.100.0, 172.16.100.128, and 172.16.100.64 subnetworks.
E. Any packet destined for a network that is not directly connected to router R2 will be dropped
immediately because of the lack of a gateway on R1.

Answer: B
Explanation:

QUESTION NO: 126

OSPF routing uses the concept of areas. What are the characteristics of OSPF areas? (Choose
Three.)

A. Each OSPF area requires a loopback interface to be configured.

B. Areas may be assigned any number from 0 to 65535.
C. Area 0 is called the backbone area.
D. Hierarchical OSPF networks do not require multiple areas.
E. Multiple OSPF areas must connect to area 0.
F. Single area OSPF networks must be configured in area 1.

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Answer: B,C,E
Explanation:

QUESTION NO: 127

Refer to the exhibit.

Which two statements are true about the loopback address that is configured on RouterB?
(Choose two.)

A. It ensures that data will be forwarded by RouterB.

B. It provides stability for the OSPF process on RouterB.
C. It specifies that the router ID for RouterB should be 10.0.0.1.
D. It decreases the metric for routes that are advertised from RouterB.
E. It indicates that RouterB should be elected the DR for the LAN.

Answer: B,C
Explanation:

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QUESTION NO: 128

Which characteristics are representative of a link-state routing protocol? (Choose three.)

A. provides common view of entire topology

B. exchanges routing tables with neighbors
C. calculates shortest path
D. utilizes event-triggered updates
E. utilizes frequent periodic updates

Answer: A,C,D
Explanation:

QUESTION NO: 129

The internetwork infrastructure of company XYZ consists of a single OSPF area as shown in the
graphic. There is concern that a lack of router resources is impeding internetwork performance. As
part of examining the router resources, the OSPF DRs need to be known. All the router OSPF
priorities are at the default and the router IDs are shown with each router.

Which routers are likely to have been elected as DR? (Choose two.)

A. Corp-1

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B. Corp-2
C. Corp-3
D. Corp-4
E. Branch-1
F. Branch-2

Answer: D,F
Explanation:

QUESTION NO: 130

Refer to the exhibit.

The network is converged.After link-state advertisements are received from Router_A, what
information will Router_E contain in its routing table for the subnets 208.149.23.64 and
208.149.23.96?

A. 208.149.23.64[110/13] via 190.173.23.10, 00:00:07, FastEthemet0/0

208.149.23.96[110/13] via 190.173.23.10, 00:00:16, FastEthemet0/0
B. 208.149.23.64[110/1] via 190.172.23.10, 00:00:07, Serial1/0
208.149.23.96[110/3] via 190.173.23.10, 00:00:16, FastEthemet0/0
C. 208.149.23.64[110/13] via 190.173.23.10, 00:00:07, Serial1/0
208.149.23.96[110/13] via 190.173.23.10, 00:00:16, Serial1/0
208.149.23.96[110/13] via 190.173.23.10, 00:00:16, FastEthemet0/0
D. 208.149.23.64[110/3] via 190.172.23.10, 00:00:07, Serial1/0
208.149.23.96[110/3] via 190.173.23.10, 00:00:16, Serial1/0

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Answer: A
Explanation:

QUESTION NO: 131

What information can be used by a router running a link-state protocol to build and maintain its
topological database? (Choose two.)

A. hello packets
B. SAP messages sent by other routers
C. LSAs from other routers
D. beacons received on point-to-point links
E. routing tables received from other link-state routers
F. TTL packets from designated routers

Answer: A,C
Explanation:

QUESTION NO: 132

What are two benefits of using a single OSPF area network design? (Choose two.)

A. It is less CPU intensive for routers in the single area.

B. It reduces the types of LSAs that are generated.
C. It removes the need for virtual links.
D. It increases LSA response times.
E. It reduces the number of required OSPF neighbor adjacencies.

Answer: B,C
Explanation:

QUESTION NO: 133

What command sequence will configure a router to run OSPF and add network 10.1.1.0 /24 to
area 0?

A. router ospf area 0

network 10.1.1.0 255.255.255.0 area 0

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B. router ospf
network 10.1.1.0 0.0.0.255
C. router ospf 1
network 10.1.1.0 0.0.0.255 area 0
D. router ospf area 0
network 10.1.1.0 0.0.0.255 area 0
E. router ospf
network 10.1.1.0 255.255.255.0 area 0
F. router ospf 1
network 10.1.1.0 0.0.0.255

Answer: C
Explanation:

QUESTION NO: 134

Refer to the exhibit.

If the router Cisco returns the given output and has not had its router ID set manually, what value
will OSPF use as its router ID?

A. 192.168.1.1
B. 172.16.1.1
C. 1.1.1.1
D. 2.2.2.2

Answer: D
Explanation:

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QUESTION NO: 135

What OSPF command, when configured, will include all interfaces into area 0?

A. network 0.0.0.0 255.255.255.255 area 0

B. network 0.0.0.0 0.0.0.0 area 0
C. network 255.255.255.255 0.0.0.0 area 0
D. network all-interfaces area 0

Answer: A
Explanation:

QUESTION NO: 136

Which statement describes the process ID that is used to run OSPF on a router?

A. It is globally significant and is used to represent the AS number.

B. It is locally significant and is used to identify an instance of the OSPF database.
C. It is globally significant and is used to identify OSPF stub areas.
D. It is locally significant and must be the same throughout an area.

Answer: B
Explanation:

QUESTION NO: 137

Scenario

Refer to the topology. Your company has decided to connect the main office with three other
remote branch offices using point-to-point serial links.

You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main
office and the routers located in the remote branch offices.

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An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2
office. What is causing the problem?

A. There is an area ID mismatch.

B. There is a PPP authentication issue; a password mismatch.
C. There is an OSPF hello and dead interval mismatch.
D. There is a missing network command in the OSPF process on R5.

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Answer: C
Explanation:

QUESTION NO: 138

Scenario

Refer to the topology. Your company has decided to connect the main office with three other
remote branch offices using point-to-point serial links.

You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main
office and the routers located in the remote branch offices.

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R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?

A. R1 ethernetO/1 is shutdown. Configure no shutdown command.

B. R1 ethernetO/1 configured with a non-default OSPF hello interval of 25: configure no ip ospf
hello-interval 25
C. R2 ethernetO/1 and R3 ethernetO/O are configured with a non-default OSPF hello interval of
25; configure no ip ospf hello-interval 25
D. Enable OSPF for R1 ethernetO/1; configure ip ospf 1 area 0 command under ethernetO/1

Answer: B
Explanation:

QUESTION NO: 139

Scenario

Refer to the topology. Your company has decided to connect the main office with three other
remote branch offices using point-to-point serial links.

You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main
office and the routers located in the remote branch offices.

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An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3
office. What is causing the problem?

A. There is an area ID mismatch.

B. There is a PPP authentication issue; the username is not configured on R3 and R6.
C. There is an OSPF hello and dead interval mismatch.
D. The R3 router ID is configured on R6.

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Answer: D
Explanation:

Topic 5, IP Services

QUESTION NO: 140

What is the best practice when assigning IP addresses in a small office of six hosts?

A. Use a DHCP server that is located at the headquarters.

B. Use a DHCP server that is located at the branch office.
C. Assign the addresses by using the local CDP protocol.
D. Assign the addresses statically on each node.

Answer: D
Explanation:

QUESTION NO: 141 DRAG DROP

Answer:

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Explanation:

QUESTION NO: 142 DRAG DROP

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Answer:

Explanation:

QUESTION NO: 143 DRAG DROP

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Answer:

Explanation:

QUESTION NO: 144

In the configuration of NAT, what does the keyword overload signify?

A. When bandwidth is insufficient, some hosts will not be allowed to access network translation.
B. The pool of IP addresses has been exhausted.
C. Multiple internal hosts will use one IP address to access external network resources.
D. If the number of available IP addresses is exceeded, excess traffic will use the specified
address pool.

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Answer: C
Explanation:

QUESTION NO: 145

What happens when computers on a private network attempt to connect to the Internet through a
Cisco router running PAT?

A. The router uses the same IP address but a different TCP source port number for each
connection.
B. An IP address is assigned based on the priority of the computer requesting the connection.
C. The router selects an address from a pool of one-to-one address mappings held in the lookup
table.
D. The router assigns a unique IP address from a pool of legally registered addresses for the
duration of the connection.

Answer: A
Explanation:

QUESTION NO: 146

When configuring NAT, the Internet interface is considered to be what?

A. local
B. inside
C. global
D. outside

Answer: D
Explanation:

QUESTION NO: 147

The ip helper-address command does what?

A. assigns an IP address to a host

B. resolves an IP address from a DNS server
C. relays a DHCP request across networks

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D. resolves an IP address overlapping issue

Answer: C
Explanation:

QUESTION NO: 148

The network administrator is using a Windows PC application that is called putty.exe for remote
communication to a switch for network troubleshooting. Which two protocols could be used during
this communication? (Choose two.)

A. SNMP
B. HTTP
C. Telnet
D. RMON
E. SSH

Answer: C,E
Explanation:

QUESTION NO: 149

A network administrator cannot connect to a remote router by using SSH. Part of the show
interfaces command is shown.

router#show interfaces

Serial0/1/0 is up, line protocol is down

At which OSI layer should the administrator begin troubleshooting?

A. physical
B. data link
C. network
D. transport

Answer: B
Explanation:

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QUESTION NO: 150

Which of the following statements are TRUE regarding Cisco access lists? (Choose two.)

A. In an inbound access list, packets are filtered as they enter an interface.

B. In an inbound access list, packets are filtered before they exit an interface.
C. Extended access lists are used to filter protocol-specific packets.
D. You must specify a deny statement at the end of each access list to filter unwanted traffic.
E. When a line is added to an existing access list, it is inserted at the beginning of the access list.

Answer: A,C
Explanation:

QUESTION NO: 151

What does the "Inside Global" address represent in the configuration of NAT?

A. the summarized address for all of the internal subnetted addresses

B. the MAC address of the router used by inside hosts to connect to the Internet
C. a globally unique, private IP address assigned to a host on the inside network
D. a registered address that represents an inside host to an outside network

Answer: D
Explanation:

QUESTION NO: 152

Refer to the exhibit.

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A company wants to use NAT in the network shown. Which commands will apply the NAT
configuration to the proper interfaces? (Choose two.)

A. R1(config)# interface serial0/1

R1(config-if)# ip nat inside
B. R1(config)# interface serial0/1
R1(config-if)# ip nat outside
C. R1(config)# interface fastethernet0/0
R1(config-if)# ip nat inside
D. R1(config)# interface fastethernet0/0
R1(config-if)# ip nat outside
E. R1(config)# interface serial0/1
R1(config-if)# ip nat outside source pool 200.2.2.18 255.255.255.252
F. R1(config)# interface fastethernet0/0
R1(config-if)# ip nat inside source 10.10.0.0 255.255.255.0

Answer: B,C
Explanation:

QUESTION NO: 153

How many addresses will be available for dynamic NAT translation when a router is configured
with the following commands?

Router(config)#ip nat pool TAME 209.165.201.23 209.165.201.30 netmask 255.255.255.224

Router(config)#ip nat inside source list 9 pool TAME

A. 7
B. 8
C. 9
D. 10
E. 24
F. 32

Answer: B
Explanation:

Topic 6, Network Device Security

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QUESTION NO: 154

Refer to the exhibit.

The network administrator made the entries that are shown and then saved the configuration.
From a console connection, what password or password sequence is required for the
administrator to access privileged mode on Router1?

A. cisco
B. sanfran
C. sanjose
D. either cisco or sanfran
E. either cisco or sanjose
F. sanjose and sanfran

Answer: B
Explanation:

QUESTION NO: 155 DRAG DROP

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Answer:

Explanation:

QUESTION NO: 156

The following commands are entered on the router:

Burbank(config)# enable secret fortress

Burbank(config)# line con 0

Burbank(config-line)# login

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Burbank(config-line)# password n0way1n

Burbank(config-line)# exit

Burbank(config)# service password-encryption

What is the purpose of the last command entered?

A. to require the user to enter an encrypted password during the login process
B. to prevent the vty, console, and enable passwords from being displayed in plain text in the
configuration files
C. to encrypt the enable secret password
D. to provide login encryption services between hosts attached to the router

Answer: B
Explanation:

QUESTION NO: 157

What is the effect of using the service password-encryption command?

A. Only the enable password will be encrypted.

B. Only the enable secret password will be encrypted.
C. Only passwords configured after the command has been entered will be encrypted.
D. It will encrypt the secret password and remove the enable secret password from the
configuration.
E. It will encrypt all current and future passwords.

Answer: E
Explanation:

QUESTION NO: 158

An administrator has connected devices to a switch and, for security reasons, wants the
dynamically learned MAC addresses from the address table added to the running configuration.

What must be done to accomplish this?

A. Enable port security and use the keyword sticky.

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B. Set the switchport mode to trunk and save the running configuration.
C. Use the switchport protected command to have the MAC addresses added to the configuration.
D. Use the no switchport port-security command to allow MAC addresses to be added to the
configuration.

Answer: A
Explanation:

QUESTION NO: 159

A company has placed a networked PC in a lobby so guests can have access to the corporate
directory.

A security concern is that someone will disconnect the directory PC and re-connect their laptop
computer and have access to the corporate network. For the port servicing the lobby, which three
configuration steps should be performed on the switch to prevent this? (Choose three.)

A. Enable port security.

B. Create the port as a trunk port.
C. Create the port as an access port.
D. Create the port as a protected port.
E. Set the port security aging time to 0.
F. Statically assign the MAC address to the address table.
G. Configure the switch to discover new MAC addresses after a set time of inactivity.

Answer: A,C,F
Explanation:

QUESTION NO: 160

Why would a network administrator configure port security on a switch?

A. to prevent unauthorized Telnet access to a switch port

B. to prevent unauthorized hosts from accessing the LAN
C. to limit the number of Layer 2 broadcasts on a particular switch port
D. block unauthorized access to the switch management interfaces

Answer: B
Explanation:

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QUESTION NO: 161

How can you ensure that only the MAC address of a server is allowed by switch port Fa0/1?

A. Configure port Fa0/1 to accept connections only from the static IP address of the server.
B. Configure the server MAC address as a static entry of port security.
C. Use a proprietary connector type on Fa0/1 that is incomputable with other host connectors.
D. Bind the IP address of the server to its MAC address on the switch to prevent other hosts from
spoofing the server IP address.

Answer: B
Explanation:

QUESTION NO: 162

What should be part of a comprehensive network security plan?

A. Allow users to develop their own approach to network security.

B. Physically secure network equipment from potential access by unauthorized individuals.
C. Encourage users to use personal information in their passwords to minimize the likelihood of
passwords being forgotten.
D. Delay deployment of software patches and updates until their effect on end-user equipment is
well known and widely reported.
E. Minimize network overhead by deactivating automatic antivirus client updates.

Answer: B
Explanation:

QUESTION NO: 163

What is the purpose of the switchport command?

Switch(config-if)# switchport port-security maximum 1

Switch(config-if)# switchport port-security mac-address 0018.DE8B.4BF8

A. It ensures that only the device with the MAC address 0018.DE8B.4BF8 will be able to connect
to the port that is being configured.

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B. It informs the switch that traffic destined for MAC address 0018.DE8B.4BF8 should only be sent
to the port that is being configured.
C. It will act like an access list and the port will filter packets that have a source or destination
MAC of 0018.DE8B.4BF8.
D. The switch will shut down the port of any traffic with source MAC address of 0018.DE8B.4BF8.

Answer: A
Explanation:

QUESTION NO: 164

What are two recommended ways of protecting network device configuration files from outside
network security threats? (Choose two.)

A. Allow unrestricted access to the console or VTY ports.

B. Use a firewall to restrict access from the outside to the network devices.
C. Always use Telnet to access the device command line because its data is automatically
encrypted.
D. Use SSH or another encrypted and authenticated transport to access device configurations.
E. Prevent the loss of passwords by disabling password encryption.

Answer: B,D
Explanation:

QUESTION NO: 165

Refer to the exhibit.

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For security reasons, information about RTA, including platform and IP addresses, should not be
accessible from the Internet. This information should, however, be accessible to devices on the
internal networks of RTA.

Which command or series of commands will accomplish these objectives?

A. RTA(config)#no cdp run

B. RTA(config)#no cdp enable
C. RTA(config)#interface s0/0
RTA(config-if)#no cdp run
D. RTA(config)#interface s0/0
RTA(config-if)#no cdp enable

Answer: D
Explanation:

QUESTION NO: 166

From which of the following attacks can Message Authentication Code (MAC) shield your
network?

A. DoS
B. DDoS
C. spoofing
D. SYN floods

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Answer: C
Explanation:

Topic 7, Troubleshooting

QUESTION NO: 167

Refer to the exhibit.

An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator
has entered the command shown in the exhibit. Based on the output shown, what could be the
problem?

A. The serial interface is configured for half duplex.

B. The serial interface does not have a cable attached.
C. The serial interface has the wrong type of cable attached.
D. The serial interface is configured for the wrong frame size.
E. The serial interface has a full buffer.

Answer: C
Explanation:

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QUESTION NO: 168

Refer to the exhibit.

A TFTP server has recently been installed in the Atlanta office. The network administrator is
located in the NY office and has made a console connection to the NY router. After establishing
the connection they are unable to backup the configuration file and IOS of the NY router to the
TFTP server. What is the cause of this problem?

A. The NY router has an incorrect subnet mask.

B. The TFTP server has an incorrect IP address.
C. The TFTP server has an incorrect subnet mask.
D. The network administrator computer has an incorrect IP address.

Answer: C
Explanation:

QUESTION NO: 169

If a host experiences intermittent issues that relate to congestion within a network while remaining
connected, what could cause congestion on this LAN?

A. half-duplex operation
B. broadcast storms
C. network segmentation

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D. multicasting

Answer: B
Explanation:

QUESTION NO: 170

Refer to the exhibit.

The junior network support staff provided the diagram as a recommended configuration for the first
phase of a four-phase network expansion project. The entire network expansion will have over
1000 users on 14 network segments and has been allocated this IP address space.

192.168.1.1 through 192.168.5.255

192.168.100.1 through 192.168.100.255

What are three problems with this design? (Choose three.)

A. The AREA 1 IP address space is inadequate for the number of users.

B. The AREA 3 IP address space is inadequate for the number of users.
C. AREA 2 could use a mask of /25 to conserve IP address space.
D. The network address space that is provided requires a single network-wide mask.
E. The router-to-router connection is wasting address space.

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F. The broadcast domain in AREA 1 is too large for IP to function.

Answer: A,C,E
Explanation:

QUESTION NO: 171

Refer to the exhibit.

Host A can communicate with Host B but not with Hosts C or D. How can the network
administrator solve this problem?

A. Configure Hosts C and D with IP addresses in the 192.168.2.0 network.

B. Install a router and configure a route to route between VLANs 2 and 3.
C. Install a second switch and put Hosts C and D on that switch while Hosts A and B remain on
the original switch.
D. Enable the VLAN trunking protocol on the switch.

Answer: B
Explanation:

QUESTION NO: 172

Refer to the exhibit.

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A network administrator has configured a Catalyst 2950 switch for remote management by pasting
into the console the configuration commands that are shown in the exhibit. However, a Telnet
session cannot be successfully established from a remote host. What should be done to fix this
problem?

A. Change the first line to interface fastethernet 0/1.

B. Change the first line to interface vlan 0/1.
C. Change the fifth line to ip default-gateway 192.168.17.241.
D. Change the fifth line to ip route 0.0.0.0 0.0.0.0 192.168.17.1.
E. Change the sixth line to line con 0.

Answer: C
Explanation:

QUESTION NO: 173

Refer to the exhibit.

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The network administrator is testing connectivity from the branch router to the newly installed
application server. What is the most likely reason for the first ping having a success rate of only 60
percent?

A. The network is likely to be congested, with the result that packets are being intermittently
dropped.
B. The branch router had to resolve the application server MAC address.
C. There is a short delay while NAT translates the server IP address.
D. A routing table lookup delayed forwarding on the first two ping packets.
E. The branch router LAN interface should be upgraded to FastEthernet.

Answer: B
Explanation:

QUESTION NO: 174

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Select two options which are security Issues which need to be modified before RouterA is used?
(Choose two.)

A. unencrypted weak password is configured to protect privilege mode

B. inappropriate wording in banner message

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C. the virtual terminal lines have a weak password configured
D. virtual terminal lines have a password, but it will not be used
E. configuration supports un-secure web server access

Answer: B,D
Explanation:

QUESTION NO: 175

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Select three options which are security issues with the current configuration of SwitchA. (Choose
three.)

A. Privilege mode is protected with an unencrypted password

B. Inappropriate wording in banner message
C. Virtual terminal lines are protected only by a password requirement
D. Both the username and password are weak
E. Telnet connections can be used to remotely manage the switch
F. Cisco user will be granted privilege level 15 by default

Answer: A,B,D
Explanation:

QUESTION NO: 176

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Which two of the following are true regarding the configuration of RouterA? (Choose two.)

A. At least 5 simultaneous remote connections are possible

B. Only telnet protocol connections to RouterA are supported
C. Remote connections to RouterA using telnet will succeed
D. Console line connections will nevertime out due to inactivity

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E. Since DHCP is not used on Fa0/1 there is not a need to use the NAT protocol

Answer: A,C
Explanation:

QUESTION NO: 177

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Which of the following is true regarding the configuration of SwitchA?

A. only 5 simultaneous remote connections are possible

B. remote connections using ssh will require a username and password
C. only connections from the local network will be possible
D. console access to SwitchA requires a password

Answer: B
Explanation:

QUESTION NO: 178

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What is the subnet broadcast address of the LAN connected to Router1?

A. 192.168.8.15
B. 192.168.8.31
C. 192.168.8.63
D. 192.168.8.127

Answer: A
Explanation:

QUESTION NO: 179

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What is the bandwidth on the WAN interface of Router 1?

A. 16 Kbit/sec
B. 32 Kbit/sec
C. 64 Kbit/sec
D. 128 Kbit/sec
E. 512 Kbit/sec
F. 1544 Kbit/sec

Answer: A
Explanation:

QUESTION NO: 180

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Including the address on the Routed Ethernet interface, how many hosts can have IP addresses
on the LAN to which Routed is connected?

A. 6
B. 30
C. 62
D. 126

Answer: A
Explanation:

QUESTION NO: 181

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The hosts in the LAN are not able to connect to the Internet. Which commands will correct this
issue?

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E

Answer: B

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Explanation:

QUESTION NO: 182

The network administrator has found the following problem.

The remote networks 172.16.10.0, 172.16.20.0, and 172.16.30.0 are accessed through the
Central router's serial 0/0 interface. No users are able to access 172.16.20.0. After reviewing the
command output shown in the graphic, what is the most likely cause of the problem?

A. no gateway of last resort on Central

B. Central router's not receiving 172.16.20.0 update
C. incorrect static route for 172.16.20.0
D. 172.16.20.0 not located in Central's routing table

Answer: C

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Explanation:

QUESTION NO: 183

Refer to the exhibit.

After the power-on-self test (POST), the system LED of a Cisco 2950 switch turns amber. What is
the status of the switch?

A. The POST was successful.

B. The switch has a problem with the internal power supply and needs an external power supply to
be attached.
C. POST failed and there is a problem that prevents the operating system from being loaded.
D. The switch has experienced an internal problem but data can still be forwarded at a slower rate.
E. The switch passed POST, but all the switch ports are busy.

Answer: C
Explanation:

QUESTION NO: 184

Refer to the exhibit.

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Why did the device return this message?

A. The command requires additional options or parameters

B. There is no show command that starts with ru.
C. The command is being executed from the wrong router mode.
D. There is more than one show command that starts with the letters ru.

Answer: D
Explanation:

QUESTION NO: 185

Refer to the exhibit.

The two connected ports on the switch are not turning orange or green. What would be the most
effective steps to troubleshoot this physical layer problem? (Choose three.)

A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.

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B. Ensure that cables A and B are straight-through cables.
C. Ensure cable A is plugged into a trunk port.
D. Ensure the switch has power.
E. Reboot all of the devices.
F. Reseat all cables.

Answer: B,D,F
Explanation:

QUESTION NO: 186

Refer to the exhibit.

A person is trying to send a file from a host on Network A of the JAX Company to a server on
Network Z of the XYZ Company. The file transfer fails. The host on Network A can communicate
with other hosts on Network A.

Which command, issued from router RTA, would be the most useful for troubleshooting this
problem?

A. show flash:
B. show history
C. show version
D. show interfaces
E. show controllers serial

Answer: D
Explanation:

QUESTION NO: 187

Refer to the exhibit.

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A user cannot reach any web sites on the Internet, but others in the department are not having a
problem.

What is the most likely cause of the problem?

A. IP routing is not enabled.

B. The default gateway is not in the same subnet.
C. A DNS server address is not reachable by the PC.
D. A DHCP server address is not reachable by the PC.
E. NAT has not been configured on the router that connects to the Internet.

Answer: C
Explanation:

QUESTION NO: 188

Refer to the exhibit.

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A network administrator is troubleshooting a connectivity problem on the serial interfaces. The
output from the show interfaces command on both routers shows that the serial interface is up,
line protocol is down. Given the partial output for the show running-config in the exhibit, what is the
most likely cause of this problem?

A. The serial cable is bad.

B. The MTU is incorrectly configured.
C. The Layer 2 framing is misconfigured.
D. The IP addresses are not in the same subnet.

Answer: C
Explanation:

QUESTION NO: 189

Refer to the exhibit.

The DHCP settings have recently been changed on the DHCP server and the client is no longer
able to reach network resources. What should be done to correct this situation?

A. Verify that the DNS server address is correct in the DHCP pool.
B. Ping the default gateway to populate the ARP cache.
C. Use the tracert command on the DHCP client to first determine where the problem is located.
D. Clear all DHCP leases on the router to prevent address conflicts.
E. Issue the ipconfig command with the /release and /renew options in a command window.

Answer: E
Explanation:

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QUESTION NO: 190

Refer to the exhibit.

A network technician is asked to design a small network with redundancy. The exhibit represents
this design, with all hosts configured in the same VLAN. What conclusions can be made about this
design?

A. This design will function as intended.

B. Spanning-tree will need to be used.
C. The router will not accept the addressing scheme.
D. The connection between switches should be a trunk.
E. The router interfaces must be encapsulated with the 802.1Q protocol.

Answer: C
Explanation:

QUESTION NO: 191

Refer to the exhibit.

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An administrator replaced the 10/100 Mb NIC in a desktop PC with a 1 Gb NIC and now the PC
will not connect to the network. The administrator began troubleshooting on the switch. Using the
switch output shown, what is the cause of the problem?

A. Speed is set to 100Mb/s.

B. Input flow control is off.
C. Encapsulation is set to ARPA.
D. The port is administratively down.
E. The counters have never been cleared.

Answer: A
Explanation:

QUESTION NO: 192

Refer to the exhibit.

A technician is troubleshooting a host connectivity problem. The host is unable to ping a server
connected to Switch_A. Based on the results of the testing, what could be the problem?

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A. A remote physical layer problem exists.
B. The host NIC is not functioning.
C. TCP/IP has not been correctly installed on the host.
D. A local physical layer problem exists.

Answer: D
Explanation:

QUESTION NO: 193

Refer to the exhibit.

A problem with network connectivity has been observed. It is suspected that the cable connected
to switch port Fa0/9 on Switch1 is disconnected. What would be an effect of this cable being
disconnected?

A. Host B would not be able to access the server in VLAN9 until the cable is reconnected.
B. Communication between VLAN3 and the other VLANs would be disabled.
C. The transfer of files from Host B to the server in VLAN9 would be significantly slower.
D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal
network function would resume.

Answer: D
Explanation:

QUESTION NO: 194

A receiving host has failed to receive all of the segments that it should acknowledge. What can the

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host do to improve the reliability of this communication session?

A. decrease the window size

B. use a different source port for the session
C. decrease the sequence number
D. obtain a new IP address from the DHCP server
E. start a new session using UDP

Answer: A
Explanation:

QUESTION NO: 195

Refer to the exhibit.

A technician pastes the configurations in the exhibit into the two new routers shown. Otherwise,
the routers are configured with their default configurations.

A ping from Host1 to Host 2 fails, but the technician is able to ping the S0/0 interface of R2 from
Host 1. The configurations of the hosts have been verified as correct. What could be the cause of
the problem?

A. The serial cable on R1 needs to be replaced.

B. The interfaces on R2 are not configured properly
C. R1 has no route to the 192.168.1.128 network.
D. The IP addressing scheme has overlapping subnetworks.
E. The ip subnet-zero command must be configured on both routers.

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Answer: C
Explanation:

QUESTION NO: 196

Refer to the exhibit.

Serial 0/0 does not respond to a ping request from a host on the FastEthernet 0/0 LAN. How can
this problem be corrected?

A. Enable the Serial 0/0 interface.

B. Correct the IP address for Serial 0/0.
C. Correct the IP address for FastEthernet 0/0
D. Change the encapsulation type on Serial 0/0
E. Enable autoconfiguration on the Serial 0/0 interface

Answer: A
Explanation:

QUESTION NO: 197

Refer to the exhibit.

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Why was this message received?

A. No VTY password has been set.

B. No enable password has been set.
C. No console password has been set.
D. No enable secret password has been set.
E. The login command has not been set on CON 0
F. The login command has not been set on the VTY ports.

Answer: A
Explanation:

QUESTION NO: 198

Refer to the exhibit.

After configuring two interfaces on the HQ router, the network administrator notices an error
message. What must be done to fix this error?

A. The serial interface must be configured first.

B. The serial interface must use the address 192.168.1.2
C. The subnet mask of the serial interface should be changed to 255.255.255.0
D. The subnet mask of the FastEthernet interface should be changed to 255.255.255.240
E. The address of the FastEthernet interface should be changed to 192.168.1.66

Answer: D
Explanation:

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QUESTION NO: 199

Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the
exhibit, but there is no data connectivity between them. The Atlanta router is known to have a
correct configuration.

Given the partial configurations shown in the exhibit, what is the problem on the Brevard router
that is causing the lack of connectivity?

A. A loopback is not set.

B. The IP address is incorrect.
C. The subnet mask is incorrect.
D. The serial line encapsulations are incompatible.
E. The maximum transmission unit (MTU) size is too large.
F. The bandwidth setting is incompatible with the connected interface.

Answer: B
Explanation:

Topic 8, Simulation

QUESTION NO: 200 CORRECT TEXT

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Answer: Router>enable
Router#config terminal
Router(config)#hostname Apopka
2) Enable-secret password (cisco10):
Apopka(config)#enable secret cisco10
3) Set the console password to RouterPass:
Apopka(config)#line console 0
Apopka(config-line)#password RouterPass
Apopka(config-line)#login
Apopka(config-line)#exit
4) Set the Telnet password to scan90:
Apopka(config)#line vty 0 4
Apopka(config-line)#password scan90
Apopka(config-line)#login
Apopka(config-line)#exit
5) Configure Ethernet interface (on the right) of router Apopka:
The subnet mask of the Ethernet network 209.165.201.0 is 27. From this subnet mask, we can
find out the increment by converting it into binary form, that is /27 = 1111 1111.1111 1111.1111
1111.1110 0000. Pay more attention to the last bit 1 because it tells us the increment, using the
formula:
Increment = 2place of the last bit 1 (starts counting from 0,from right to left), in this case increment
= 25 = 32. Therefore:
Increment: 32
Network address: 209.165.201.0
Broadcast address: 209.165.201.31 (because 209.165.201.32 is the second subnetwork, so the
previous IP - 209.165.201.31 - is the broadcast address of the first subnet).
-> The second assignable host address of this subnetwork is 209.165.201.2/27
Assign the second assignable host address to Fa0/0 interface of Apopka router:

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Apopka(config)#interface Fa0/0
Apopka(config-if)#ip address 209.165.201.2 255.255.255.224
Apopka(config-if)#no shutdown
Apopka(config-if)#exit
6) Configure Serial interface (on the left) of router Apopka:
Using the same method to find out the increment of the Serial network:
Serial network 192.0.2.128/28:
Increment: 16 (/28 = 1111 1111.1111 1111.1111 1111.1111 0000)
Network address: 192.0.2.128 (because 8 * 16 = 128 so 192.0.2.128 is also the network address
of this subnet)
Broadcast address: 192.0.2.143
-> The last assignable host address in this subnet is 192.0.2.142/28.
Assign the last assignable host address to S0/0/0 interface of Apopka router:
Apopka(config)#interface S0/0/0 (or use interface S0/0 if not successful)
Apopka(config-if)#ip address 192.0.2.142 255.255.255.240
Apopka(config-if)#no shutdown
Apopka(config-if)#exit
7) Configure RIP v2 routing protocol:
Apopka(config)#router rip
Apopka(config-router)#version 2
Apopka(config-router)#network 209.165.201.0
Apopka(config-router)#network 192.0.2.128
Apopka(config-router)#end
Save the configuration:
Apopka#copy running-config startup-config
Finally, you should use the ping command to verify all are working properly!

QUESTION NO: 201 CORRECT TEXT

There are three locations in a school district of a large city: ROUTER -M, ROUTER -W and
ROUTER -U. The network connection between two of these locations has already functioned.
Configure the ROUTER -M router IP addresses on the E0 and S0 interfaces so that the E0
receives the first usable subnet while the S0 receives the second usable subnet from the network
192.168.160.0/28. Both interfaces would receive the last available ip address on the proper
subnet.

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NotE. The OSPF process must be configured to allow interfaces in specific subnets to
participate in the routing process.

Answer: ROUTER-M> enable

PassworD. Cisco
ROUTER-M# config t
ROUTER-M(config)# interface e0
ROUTER-M(config-if)# ip address 192.168.160.14 255.255.255.240
ROUTER-M(config-if)# no shutdown
ROUTER -M(config-if)# exit
ROUTER -M(config)# interface s0
ROUTER-M(config-if)# ip address 192.168.160.30 255.255.255.240
ROUTER-M(config-if)# no shutdown
ROUTER-M(config-if)# end
ROUTER-M# copy run start

QUESTION NO: 202 CORRECT TEXT

This topology contains 3 routers and 1 switch. Complete the topology.

Drag the appropriate device icons to the labeled Device

Drag the appropriate connections to the locations labeled Connections.

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Drag the appropriate IP addresses to the locations labeled IP address

(Hint: use the given host addresses and Main router information)

To remove a device or connection, drag it away from the topology.

Use information gathered from the Main router to complete the configuration of any additional
routers.

No passwords are required to access the Main router. The config terminal command has been
disabled for the HQ router. The router does not require any configuration.

Configure each additional router with the following:

Configure the interfaces with the correct IP address and enable the interfaces.

Set the password to allow console access to consolepw

Set the password to allow telnet access to telnetpw

Set the password to allow privilege mode access to privpw

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Not E: Because routes are not being added to the configurations, you will not be able to ping
through the internetwork.

All devices have cable autosensing capabilities disabled.

All hosts are PC’s

Answer: Specify appropriate devices and drag them on the "Device" boxes
For the device at the bottom-right box, we notice that it has 2 interfaces Fa0/2 and Fa0/4;
moreover the link connects the PC on the right with the device on the bottom-right is a straight-
through link -> it is a switch
The question stated that this topology contains 3 routers and 1 switch -> two other devices are
routers
Place them on appropriate locations as following:
(Host D and host E will be automatically added after placing two routers. Click on them to access
neighboring routers)
Specify appropriate connections between these devices:
+ The router on the left is connected with the Main router through FastEthernet interfaces: use a
crossover cable
+ The router on the right is connected with the Main router through Serial interfaces: use a serial
cable
+ The router on the right and the Switch: use a straight-through cable
+ The router on the left and the computer: use a crossover cable
(To remember which type of cable you should use, follow these tips:
- To connect two serial interfaces of 2 routers we use serial cable
- To specify when we use crossover cable or straight-through cable, we should remember:
Group 1: Router, Host, Server
Group 2: Hub, Switch
One device in group 1 + One device in group 2: use straight-through cable
Two devices in the same group: use crossover cable
For examplE. we use straight-through cable to connect switch to router, switch to host, hub to
host, hub to server... and we use crossover cable to connect switch to switch, switch to hub, router
to router, host to host... )
Assign appropriate IP addresses for interfaces:
From Main router, use show running-config commanD.
(Notice that you may see different IP addresses in the real CCNA exam, the ones shown above
are just used for demonstration)
From the output we learned that the ip address of Fa0/0 interface of the Main router is
192.168.152.177/28. This address belongs to a subnetwork which has:
Increment: 16 (/28 = 255.255.255.240 or 1111 1111.1111 1111.1111 1111.1111 0000)
Network address: 192.168.152.176 (because 176 = 16 * 11 and 176 < 177)

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Broadcast address: 192.168.152.191 (because 191 = 176 + 16 - 1)
And we can pick up an ip address from the list that belongs to this subnetwork: 192.168.152.190
and assign it to the Fa0/0 interface the router on the left
Use the same method for interface Serial0/0 with an ip address of 192.168.152.161
Increment: 16
Network address: 192.168.152.160 (because 160 = 16 * 10 and 160 < 161)
Broadcast address: 192.168.152.175 (because 176 = 160 + 16 - 1)
-> and we choose 192.168.152.174 for Serial0/0 interface of the router on the right
Interface Fa0/1 of the router on the left
IP (of the computer on the left) : 192.168.152.129/28
Increment: 16
Network address: 192.168.152.128 (because 128 = 16 * 8 and 128 < 129)
Broadcast address: 192.168.152.143 (because 143 = 128 + 16 - 1)
-> we choose 192.168.152.142 from the list
Interface Fa0/0 of the router on the right
IP (of the computer on the left) : 192.168.152.225/28
Increment: 16
Network address: 192.168.152.224 (because 224 = 16 * 14 and 224 < 225)
Broadcast address: 192.168.152.239 (because 239 = 224 + 16 - 1)
-> we choose 192.168.152.238 from the list
Let's have a look at the picture below to summarize
Configure two routers on the left and right with these commands:
Router1 = router on the left
Assign appropriate IP addresses to Fa0/0 & Fa0/1 interfaces:
Router1>enable
Router1#configure terminal
Router1(config)#interface fa0/0
Router1(config-if)#ip address 192.168.152.190 255.255.255.240
Router1(config-if)#no shutdown
Router1(config-if)#interface fa0/1
Router1(config-if)#ip address 192.168.152.142 255.255.255.240
Router1(config-if)#no shutdown
Set passwords (configure on two routers)
+ Console password:
Router1(config-if)#exit
Router1(config)#line console 0
Router1(config-line)#password consolepw
Router1(config-line)#login
Router1(config-line)#exit
+ Telnet password:
Router1(config)#line vty 0 4

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Router1(config-line)#password telnetpw
Router1(config-line)#login
Router1(config-line)#exit
+ Privilege mode password:
Router1(config)#enable password privpw
Save the configuration:
Router1(config)#exit
Router1#copy running-config startup-config
Configure IP addresses of Router2 (router on the right)
Router2>enable
Router2#configure terminal
Router2(config)#interface fa0/0
Router2(config-if)#ip address 192.168.152.238 255.255.255.240
Router2(config-if)#no shutdown
Router2(config-if)#interface serial0/0
Router2(config-if)#ip address 192.168.152.174 255.255.255.240
Router2(config-if)#no shutdown
Then set the console, telnet and privilege mode passwords for Router2 as we did for Router1,
remember to save the configuration when you finished.

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