ltiple Choice Questions

1. What does the OSI model stand for?

– A) Open System Interconnection

– B) Open Source Interconnection

– C) Open System Integration

– D) Open Source Integration

Answer: A) Open System Interconnection

2. Which layer of the OSI model is responsible for routing?

– A) Physical Layer

– B) Data Link Layer

– C) Network Layer

– D) Transport Layer

Answer: C) Network Layer

3. Which of the following topologies is characterized by all nodes being connected to a single central
hub?

– A) Ring Topology

– B) Star Topology

– C) Mesh Topology

– D) Bus Topology

Answer: B) Star Topology

4. In which type of network does each node act as both a client and a server?

– A) Client-Server Network

– B) Peer-to-Peer Network

– C) Hybrid Network

– D) Distributed Network

Answer: B) Peer-to-Peer Network

5. What is the main function of a router?

– A) To connect devices within the same network

– B) To forward data packets between different networks

– C) To amplify signals in a network

– D) To filter traffic within a single network

Answer: B) To forward data packets between different networks

6. Which protocol is used to send email?

– A) HTTP

– B) FTP

– C) SMTP

– D) SNMP

Answer: C) SMTP

7. What does TCP stand for?

– A) Transmission Control Protocol

– B) Transfer Control Protocol

– C) Transport Communication Protocol

– D) Transmission Communication Protocol

Answer: A) Transmission Control Protocol

8. Which addressing scheme is used in IPv4?

– A) 32-bit binary address

– B) 64-bit binary address

– C) 128-bit binary address

– D) 256-bit binary address

Answer: A) 32-bit binary address

9. What is the primary purpose of subnetting?

 – A) To increase bandwidth

– B) To improve security

– C) To divide a large network into smaller, manageable segments

– D) To simplify routing

Answer: C) To divide a large network into smaller, manageable segments

10. Which of the following is NOT a networking device?

– A) Switch

– B) Router

– C) Hub

– D) Monitor

Answer: D) Monitor

11. What type of cable is typically used for high-speed data transmission?

– A) Coaxial Cable

– B) Twisted Pair Cable

– C) Fiber Optic Cable

– D) Ribbon Cable

Answer: C) Fiber Optic Cable

12. Which layer of the OSI model is responsible for error detection and correction?

– A) Physical Layer

– B) Data Link Layer

– C) Network Layer

– D) Transport Layer

Answer: B) Data Link Layer

13. Which of the following protocols is used to transfer files over the Internet?

– A) SMTP
 – B) FTP

– C) HTTP

– D) SNMP

Answer: B) FTP

14. What does NAT stand for in networking?

– A) Network Address Translation

– B) Network Access Translation

– C) Network Application Translation

– D) Network Address Transfer

Answer: A) Network Address Translation

15. Which of the following is a characteristic of a mesh topology?

– A) All nodes are connected to a single cable.

– B) Each node is connected to every other node.

– C) There is a central hub that connects all nodes.

– D) Nodes are arranged in a circular manner.

Answer: B) Each node is connected to every other node.

16. What is the maximum length of a standard Ethernet cable (Cat 5e)?

– A) 50 meters

– B) 100 meters

– C) 200 meters

– D) 300 meters

Answer: B) 100 meters

17. Which of the following security measures can be used to secure a wireless network?

– A) WEP (Wired Equivalent Privacy)

 – B) WPA (Wi-Fi Protected Access)

– C) WPA2 (Wi-Fi Protected Access II)

– D) All of the above

Answer: D) All of the above

18. Which protocol is used for secure communication over a computer network?

– A) HTTP

– B) FTP

– C) HTTPS

– D) SMTP

Answer: C) HTTPS

19. In which layer of the OSI model does encryption occur?

– A) Application Layer

– B) Presentation Layer

– C) Session Layer

– D) Transport Layer

Answer: B) Presentation Layer

20. Which of the following best describes a WAN (Wide Area Network)?

– A) A network covering a small geographic area, like a home or office.

– B) A network that connects multiple LANs across large distances.

– C) A network limited to personal devices within close proximity.

– D) A network that connects devices within a single building.

Answer: B) A network that connects multiple LANs across large distances.

Feel free to modify any questions or answers based on your specific curriculum or focus areas!

ChatGPT 5 | DeepSeek | Midjourney:

Here are 50 multiple-choice questions based on Chapter 4 of "Data Communication and Computer
Networks," focusing on communication network protocols. Each question includes four answer choices.

▎Multiple Choice Questions

1. What is a protocol in the context of data communication?

– A) A set of rules for data transmission

– B) A physical device used in networking

– C) A type of network topology

– D) A software application for data analysis

Answer: A) A set of rules for data transmission

2. Which layer of the OSI model does the Transport Protocol operate?

– A) Application Layer

– B) Transport Layer

– C) Network Layer

– D) Data Link Layer

Answer: B) Transport Layer

3. What does TCP stand for?

– A) Transmission Control Protocol

– B) Transport Control Protocol

– C) Transfer Control Protocol

– D) Transmission Communication Protocol

Answer: A) Transmission Control Protocol

4. Which protocol is used to manage and control network devices?

– A) HTTP

– B) FTP

– C) SNMP

– D) SMTP

Answer: C) SNMP

5. What is the main purpose of the Internet Protocol (IP)?

– A) To provide error correction

– B) To establish a connection between two devices

– C) To route packets across networks

– D) To encrypt data for secure transmission

Answer: C) To route packets across networks

6. Which of the following is a connection-oriented protocol?

– A) UDP

– B) IP

– C) TCP

– D) ICMP

Answer: C) TCP

7. What is the primary function of the Data Link Layer?

– A) To provide end-to-end communication

– B) To format data for the application layer

– C) To manage node-to-node data transfer

 – D) To route packets across networks

Answer: C) To manage node-to-node data transfer

8. Which of the following protocols is used for file transfer?

– A) SMTP

– B) FTP

– C) SNMP

– D) DHCP

Answer: B) FTP

9. In which layer of the OSI model does the HTTP protocol operate?

– A) Transport Layer

– B) Application Layer

– C) Network Layer

– D) Data Link Layer

Answer: B) Application Layer

10. Which protocol is used to dynamically assign IP addresses to devices on a network?

– A) DNS

– B) DHCP

– C) ARP

– D) ICMP

Answer: B) DHCP

11. What does UDP stand for?

 – A) User Datagram Protocol

– B) Universal Data Protocol

– C) Unidirectional Data Protocol

– D) Unified Datagram Protocol

Answer: A) User Datagram Protocol

12. Which of the following protocols provides reliable data transmission?

– A) UDP

– B) IP

– C) TCP

– D) ICMP

Answer: C) TCP

13. What is the primary purpose of the ARP protocol?

– A) To resolve IP addresses to MAC addresses

– B) To manage network traffic

– C) To establish secure connections

– D) To transfer files

Answer: A) To resolve IP addresses to MAC addresses

14. Which of the following best describes a "socket"?

– A) A physical connection point in a network device

– B) An endpoint for sending or receiving data across a network

– C) A type of network cable

– D) A hardware component in a computer

 Answer: B) An endpoint for sending or receiving data across a network

15. What type of addressing does IPv4 use?

– A) 64-bit addressing

– B) 32-bit addressing

– C) 128-bit addressing

– D) 256-bit addressing

Answer: B) 32-bit addressing

16. Which transport layer protocol is used for streaming media?

– A) TCP

– B) UDP

– C) HTTP

– D) FTP

Answer: B) UDP

17. Which of the following is NOT an application layer protocol?

– A) HTTP

– B) FTP

– C) ICMP

– D) SMTP

Answer: C) ICMP

18. What does NAT stand for in networking?

– A) Network Address Translation

 – B) Network Access Translation

– C) Network Application Translation

– D) Network Address Transfer

Answer: A) Network Address Translation

19. Which protocol is used to send error messages in a network?

– A) TCP

– B) ICMP

– C) UDP

– D) ARP

Answer: B) ICMP

20. What is the main function of the Session Layer in the OSI model?

– A) To establish, manage, and terminate connections between applications

– B) To route packets between networks

– C) To provide error detection and correction

– D) To format data for presentation

Answer: A) To establish, manage, and terminate connections between applications

21. Which protocol can be used to resolve hostnames to IP addresses?

– A) DHCP

– B) DNS

– C) ARP

– D) SNMP
 Answer: B) DNS

22. Which type of network topology uses a token-passing method for controlling access to the medium?

– A) Star Topology

– B) Ring Topology

– C) Bus Topology

– D) Mesh Topology

Answer: B) Ring Topology

23. What is the maximum size of a single TCP segment?

– A) 512 bytes

– B) 1024 bytes

– C) 1500 bytes (MTU)

– D) 65535 bytes

Answer: D) 65535 bytes

24. Which of the following is a feature of the TCP protocol?

– A) Connectionless communication

– B) Unreliable delivery of packets

– C) Flow control and congestion control mechanisms

– D) No error recovery

Answer: C) Flow control and congestion control mechanisms

25. Which of the following protocols operates at the Network Layer of the OSI model?

– A) TCP

– B) IP

– C) HTTP

– D) FTP
 Answer: B) IP

26. What is the purpose of flow control in networking?

– A) To prevent packet loss during transmission

– B) To ensure that a sender does not overwhelm a receiver

– C) To manage routing information

– D) To maintain security during data transfer

Answer: B) To ensure that a sender does not overwhelm a receiver

27. Which type of address is assigned to a device by its manufacturer?

– A) IP Address

– B) MAC Address

– C) Subnet Mask

– D) Hostname

Answer: B) MAC Address

28. What does SSL stand for in networking?

– A) Secure Socket Layer

– B) Secure System Layer

– C) Simple Socket Layer

– D) Secure Security Layer

Answer: A) Secure Socket Layer

29. Which protocol is primarily used for remote login to another computer over a network?

– A) FTP

– B) Telnet

– C) SNMP

– D) SMTP

Answer: B) Telnet
30. In which layer of the OSI model does encryption typically occur?

– A) Application Layer

– B) Presentation Layer

– C) Session Layer

– D) Transport Layer

Answer: B) Presentation Layer

31. What type of message does an ICMP "ping" command send?

– A) Echo Request

– B) Echo Response

– C ) Destination Unreachable

– D ) Time Exceeded

Answer: A ) Echo Request

32. Which protocol uses port 80 by default?

– A ) FTP

– B ) SMTP

– C ) HTTP

– D ) SNMP

Answer: C ) HTTP

33. What is the primary role of the Network Layer in the OSI model?

– A ) Ensuring reliable delivery of data

– B ) Routing packets between devices

– C ) Formatting data for presentation

– D ) Managing sessions between applications

Answer: B ) Routing packets between devices

34. Which of the following is NOT a characteristic of UDP?

 – A ) Connectionless protocol

– B ) Low overhead

– C ) Guaranteed delivery

– D ) No flow control mechanisms

Answer: C ) Guaranteed delivery

35. What type of addressing scheme does IPv6 use?

– A ) 32-bit addressing

– B ) 64-bit addressing

– C ) 128-bit addressing

– D ) 256-bit addressing

Answer: C ) 128-bit addressing

36. Which protocol ensures that data packets are sent in order?

– A ) UDP

– B ) IP

– C ) TCP

– D ) ICMP

Answer: C ) TCP

37. Which layer handles end-to-end communication in the OSI model?

– A ) Physical Layer

– B ) Data Link Layer

– C ) Transport Layer

– D ) Session Layer

Answer: C ) Transport Layer

38. What does the acronym "VPN" stand for?

– A ) Virtual Private Network

 – B ) Variable Public Network

– C ) Virtual Public Network

– D ) Verified Private Network

Answer: A ) Virtual Private Network

39. In which layer does the Telnet protocol operate?

– A ) Application Layer

– B ) Transport Layer

– C ) Network Layer

– D ) Data Link Layer

Answer: A ) Application Layer

40. What is the function of a gateway in networking?

– A ) To connect two different networks with different protocols

– B ) To filter traffic within a single network

– C ) To amplify signals in a network

– D ) To provide wireless access to devices

Answer: A ) To connect two different networks with different protocols

41. Which protocol is used to securely transfer files over the Internet?

– A ) FTP

– B ) SFTP

– C ) TFTP

– D ) HTTP

Answer: B ) SFTP

42. What does "throughput" refer to in networking?

– A ) The maximum capacity of a network link

– B ) The actual rate of successful message delivery over time

 – C ) The time it takes for a packet to travel from source to destination

– D ) The amount of data lost during transmission

Answer: B ) The actual rate of successful message delivery over time

43. Which layer provides services such as error detection and correction?

– A ) Physical Layer

– B ) Data Link Layer

– C ) Network Layer

– D ) Application Layer

Answer: B ) Data Link Layer

44. What type of network uses both wired and wireless connections?

– A ) LAN

– B ) WLAN

– C ) MAN

– D ) Hybrid Network

Answer: D ) Hybrid Network

45. Which command-line tool can be used to troubleshoot DNS issues?

– A ) ping

– B ) tracert

– C ) nslookup

– D ) ipconfig

Answer: C ) nslookup

46. What is a common use case for SNMP (Simple Network Management Protocol)?

– A ) File transfer between servers

– B ) Remote login to servers

– C ) Monitoring and managing network devices

 – D ) Sending emails

Answer: C ) Monitoring and managing network devices

47. In which layer does NAT (Network Address Translation occur)?

– A ) Physical Layer

– B ) Data Link Layer

– C ) Network Layer

– D ) Transport Layer

Answer: C ) Network Layer

48. Which type of attack involves intercepting communications between two parties without their
knowledge?

– A ) Phishing Attack

– B ) Man-in-the-Middle Attack

– C ) Denial-of-Service Attack

– D ) SQL Injection Attack

Answer: B ) Man-in-the-Middle Attack

49. What is the primary purpose of a firewall in a network?

– A ) To improve network speed

– B ) To monitor bandwidth usage

– C ) To prevent unauthorized access

– D ) To manage IP address assignments

Answer: C ) To prevent unauthorized access

50. Which layer deals with routing and forwarding packets in an internetwork environment?

– A ) Physical Layer

– B ) Data Link Layer

– C ) Network Layer
 – D ) Transport Layer

Answer: C ) Network Layer

Feel free to modify any questions or answers based on ChatGPT 5 | DeepSeek | Midjourney:

Here are 50 multiple-choice questions based on Chapter 5 of "Data Communication and Computer
Networks," focusing on Local Area and Wide Area Network Technologies.

▎Multiple Choice Questions

1. What is the primary characteristic of a Local Area Network (LAN)?

– A) Covers a large geographical area

– B) Limited to a small geographic area, like a building

– C) Uses satellite communication

– D) Requires a leased line

Answer: B) Limited to a small geographic area, like a building

2. Which of the following is a common LAN topology?

– A) Star

– B) Ring

– C) Bus

– D) All of the above

Answer: D) All of the above

3. What does WAN stand for?

– A) Wide Area Network

– B) Wireless Area Network

– C) Wide Access Network

– D) Wired Area Network

Answer: A) Wide Area Network

4. Which of the following technologies is commonly used in WANs?

– A) Ethernet
 – B) Token Ring

– C) MPLS

– D) Wi-Fi

Answer: C) MPLS

5. What is the maximum length of a standard Ethernet cable (Cat 5e)?

– A) 50 meters

– B) 100 meters

– C) 200 meters

– D) 300 meters

Answer: B) 100 meters

6. Which device is primarily used to connect multiple devices in a LAN?

– A) Router

– B) Switch

– C) Hub

– D) Modem

Answer: B) Switch

7. What type of network uses wireless technology to connect devices?

– A) LAN

– B) WAN

– C) WLAN

– D) MAN

Answer: C) WLAN

8. Which of the following protocols is commonly used for connecting to the internet over a telephone
line?

– A) DSL

– B) T1
 – C) ISDN

– D) Frame Relay

Answer: A) DSL

9. What is the primary purpose of a router in a network?

– A) To connect devices within a LAN

– B) To route data packets between different networks

– C) To amplify signals in a network

– D) To filter traffic within a single network

Answer: B) To route data packets between different networks

10. Which technology is used to connect multiple LANs over long distances?

– A) Ethernet

– B) Token Ring

– C) Frame Relay

– D) Wi-Fi

Answer: C) Frame Relay

11. What is the primary function of a network switch?

– A) To connect different networks together

– B) To filter and forward packets based on MAC addresses

– C) To provide wireless connectivity

– D) To assign IP addresses

Answer: B) To filter and forward packets based on MAC addresses

12. Which of the following is NOT a type of WAN technology?

– A) Leased Line

– B) DSL
 – C) Ethernet

– D) MPLS

Answer: C) Ethernet

13. What does the term "bandwidth" refer to in networking?

– A) The amount of data that can be transmitted in a given time period

– B) The physical distance between two network devices

– C) The number of devices connected to a network

– D) The strength of a network signal

Answer: A) The amount of data that can be transmitted in a given time period

14. Which topology connects all devices to a single central hub?

– A) Star Topology

– B) Ring Topology

– C) Bus Topology

– D) Mesh Topology

Answer: A) Star Topology

15. Which protocol is used for remote access in WANs?

– A) HTTP

– B) FTP

– C) SSH

– D) SNMP

Answer: C) SSH

16. What type of address is assigned to devices on a LAN?

– A) IP Address

– B) MAC Address

– C) Subnet Mask
 – D) Gateway Address

Answer: B) MAC Address

17. Which type of WAN connection uses packet switching technology?

– A) T1 Line

– B) ISDN

– C) Frame Relay

– D) DSL

Answer: C) Frame Relay

18. What does the acronym "VPN" stand for?

– A) Virtual Private Network

– B) Variable Public Network

– C) Virtual Public Network

– D) Verified Private Network

Answer: A) Virtual Private Network

19. Which device translates between different network protocols in WANs?

– A) Hub

– B) Bridge

– C) Gateway

– D) Switch

Answer: C) Gateway

20. What is the primary function of DHCP in a network?

– A) To assign IP addresses dynamically to devices on a network

– B) To manage network traffic and performance

– C) To provide DNS services for domain resolution

 – D) To secure data transmission over the network

Answer: A) To assign IP addresses dynamically to devices on a network

21. Which of the following is an advantage of using fiber optic cables for WAN connections?

– A) Lower cost compared to copper cables

– B) Higher bandwidth and longer distance capabilities

– C) Easier installation process

– D) Less susceptibility to interference

Answer: B) Higher bandwidth and longer distance capabilities

22. What is the purpose of a modem in networking?

– A) To connect multiple devices within a LAN

– B) To convert digital signals to analog signals (and vice versa)

– C) To route data between different networks

– D ) To filter traffic within a network

Answer: B ) To convert digital signals to analog signals (and vice versa)

23. What type of cable is typically used for connecting devices in a star topology?

– A ) Coaxial Cable

– B ) Twisted Pair Cable

– C ) Fiber Optic Cable

– D ) All of the above

Answer: D ) All of the above

24. Which protocol is commonly used for email transmission over the Internet?

– A ) FTP

– B ) SMTP

– C ) SNMP

– D ) HTTP
 Answer: B ) SMTP

25. What does the term "latency" refer to in networking?

– A ) The speed at which data is transmitted

– B ) The time it takes for data to travel from source to destination

– C ) The amount of data that can be transmitted at once

– D ) The reliability of data transmission

Answer: B ) The time it takes for data to travel from source to destination

26. Which technology allows multiple virtual networks to exist on a single physical network?

– A ) VLAN

– B ) VPN

– C ) NAT

– D ) ARP

Answer: A ) VLAN

27. What is the primary role of an access point in a WLAN?

– A ) To connect wired devices to the network

– B ) To provide wireless connectivity to devices

– C ) To route traffic between different networks

– D ) To manage bandwidth allocation

Answer: B ) To provide wireless connectivity to devices

28. Which protocol is used for secure file transfer over the Internet?

– A ) FTP

– B ) SFTP

– C ) HTTP

– D ) SNMP

Answer: B ) SFTP
29. What does "QoS" stand for in networking?

– A ) Quality of Service

– B ) Quantity of Signals

– C ) Quality of Signals

– D ) Quick Operational Speed

Answer: A ) Quality of Service

30. Which type of connection provides dedicated bandwidth for WANs?

– A ) Leased Line

– B ) DSL

– C ) Cable Modem

– D ) ISDN

Answer: A ) Leased Line

31. In which layer of the OSI model does Ethernet operate?

– A ) Application Layer

– B ) Transport Layer

– C ) Data Link Layer

– D ) Network Layer

Answer: C ) Data Link Layer

32. Which network device operates at the OSI Layer 3 (Network Layer)?

– A ) Switch

– B ) Hub

– C ) Router

– D ) Bridge

Answer: C ) Router

33. What type of address is used by routers to forward packets across networks?
 – A ) MAC Address

– B ) IP Address

– C ) DNS Address

– D ) Subnet Mask

Answer: B ) IP Address

34. Which WAN technology is based on circuit-switching?

– A ) Frame Relay

– B ) ATM (Asynchronous Transfer Mode)

– C ) MPLS (Multiprotocol Label Switching)

– D ) DSL

Answer: B ) ATM (Asynchronous Transfer Mode)

35. What is the primary advantage of using mesh topology in networks?

– A ) Easy installation and setup

– B ) High redundancy and reliability

– C ) Low cost of implementation

– D ) Simple troubleshooting

Answer: B ) High redundancy and reliability

36. Which type of cable uses light signals for data transmission?

– A ) Coaxial Cable

– B ) Twisted Pair Cable

– C ) Fiber Optic Cable

– D ) Serial Cable

Answer: C ) Fiber Optic Cable

37. What does "throughput" measure in networking?

– A ) The total number of packets sent over time

 – B ) The actual rate at which data is successfully transmitted

– C ) The maximum capacity of a network link

– D ) The time taken for data to travel from source to destination

Answer: B ) The actual rate at which data is successfully transmitted

38. Which protocol automatically assigns IP addresses to devices on a network?

– A ) DHCP

– B ) DNS

– C ) ARP

– D ) ICMP

Answer: A ) DHCP

39. In which layer does packet filtering occur in firewalls?

– A ) Application Layer

– B ) Transport Layer

– C ) Network Layer

– D ) Data Link Layer

Answer: C ) Network Layer

40. What type of network uses both wired and wireless connections simultaneously?

– A ) LAN

– B ) WAN

– C ) MAN

– D ) Hybrid Network

Answer: D ) Hybrid Network

41. Which technology provides high-speed internet access over cable television lines?

– A ) DSL

– B ) Fiber Optics
 – C ) Cable Modem

– D ) T1 Line

Answer: C ) Cable Modem

42. What does "SSID" stand for in wireless networking?

– A ) Service Set Identifier

– B ) Secure Set Identifier

– C ) Single Signal Identifier

– D ) System Set Identifier

Answer: A ) Service Set Identifier

43. Which layer of the OSI model is responsible for end-to-end communication control?

– A ) Physical Layer

– B ) Data Link Layer

– C ) Transport Layer

– D ) Application Layer

Answer: C ) Transport Layer

44. In which type of network would you typically find a backbone connection?

– A.) LAN

– B.) WAN

– C.) MAN

– D.) WLAN

Answer: B.) WAN

45. What kind of cable is typically used for high-speed internet connections via fiber optics?

—A.) Coaxial Cable

—B.) Twisted Pair Cable

—C.) Fiber Optic Cable

 —D.) Serial Cable

*Answer:*C.) Fiber Optic Cable

46. Which device connects multiple networks together and routes traffic between them?

—A.) Switch

—B.) Hub

—C.) Router

—D.) Repeater

*Answer:*C.) Router

47. What technology allows multiple services to share the same physical medium in WANs?

—A.) Multiplexing

—B.) Switching

—C.) Routing

—D.) Filtering

*Answer:*A.) Multiplexing

48. Which standard defines wireless local area networks (WLANs)?

—A.) IEEE 802.3

—B.) IEEE 802.11

—C.) IEEE 802.15

—D.) IEEE 802.16

*Answer:*B.) IEEE 802.11

49. What is the main disadvantage of bus topology?

 —A.) Difficult installation process

—B.) Single point of failure

—C.) High cost

—D.) Limited scalability

*Answer:*B.) Single point of failure

50. Which technology provides secure remote access over public networks?

—A.) VPN

—B.) VLAN

—C.) NAT

—D.) ARP

*Answer:*A.) VPN

Feel free to modify any questions or answers based on your specific curriculum or focus areas!your
specific curriculum or focus areas!