Computer Networks – Multiple Choice Questions (MCQs)

1. 13. In a mesh topology, how are devices connected?

   • A. Each device is connected to a central hub
   • B. Devices are connected in a linear sequence
   • C. Each device is connected to every other device
   • D. Devices are connected in a ring

2. 14. What is a protocol in computer networking?

   • A. A set of rules that govern communication between network devices
   • B. A type of network hardware
   • C. A network topology
   • D. A data transmission medium

3. 15. What is the OSI model?

   • A. A conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system
   • B. A type of network cable
   • C. A specific network protocol
   • D. A network security standard

4. 16. How many layers are there in the OSI model?

   • A. 4
   • B. 5
   • C. 6
   • D. 7

5. 17. Which layer of the OSI model is responsible for physical transmission of data?

   • A. Physical layer
   • B. Data link layer
   • C. Network layer
   • D. Transport layer

6. 18. Which layer of the OSI model is responsible for error detection and correction within a local network?

   • A. Physical layer
   • B. Data link layer
   • C. Network layer
   • D. Transport layer

7. 19. Which layer of the OSI model is responsible for logical addressing and routing of packets?

   • A. Physical layer
   • B. Data link layer
   • C. Network layer
   • D. Transport layer

8. 20. Which layer of the OSI model is responsible for reliable end-to-end data transfer?

   • A. Physical layer
   • B. Data link layer
   • C. Network layer
   • D. Transport layer

9. 21. Which layer of the OSI model is responsible for session management?

   • A. Session layer
   • B. Presentation layer
   • C. Application layer
   • D. Transport layer

10. 22. Which layer of the OSI model is responsible for data formatting and encryption?

    • A. Session layer
    • B. Presentation layer
    • C. Application layer
    • D. Network layer

11. 23. Which layer of the OSI model is the closest to the end user?

    • A. Session layer
    • B. Presentation layer
    • C. Application layer
    • D. Physical layer

12. 24. What is the TCP/IP model?

    • A. A practical implementation of the OSI model with fewer layers
    • B. A theoretical model for network communication
    • C. A specific network protocol suite
    • D. A type of network hardware