M.Sc. DEGREE EXAMINATION, APRIL 2018
Second Semester
Computer Science and Information Technology
COMPUTER NETWORKS
(CBCS 2017 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What are the goals of computer network?
2. What are connection-oriented and connectionless
services?
3. How do guided media differ from unguided media?
4. What are the disadvantages of optical fiber?
5. What is the purpose of Hamming code?
6. What is framing?
7. What is the goal of transport layer?
8. Define Transport Entity.
9. What is E-Mail?
10. What is virtual terminal?
Sub. Code
7MCI2C3
AFS-0667
2
Sp 3
Part B x 5 25)
Answer all questions, choosing either or
11. Name the five basic network topologies and
explain it.
Or
What are the categories of networks? Explain
briefly.
12. Compare circuit switching and Packet switching.
Or
Write a short note on Terminal handling.
13. Explain the about one bit-sliding window protocol.
Or
What is the basic idea of an ALOHA system?
Describe.
14. Describe the design issues of Network Layer.
Or
What is RPC? Explain.
15. What are the two fundamental cryptographic
principles? Explain.
Or
Explain the design issues of application layer.
AFS-0667
3
Sp 3
Part C x 10 30)
Answer any three questions.
16. What are the seven layers of ISO OSI reference model?
Discuss.
17. Discuss about the ISDN system architecture.
18. Describe the design issues of Data Link Layer.
19. Explain any two routing algorithms with example.
20. Describe the architecture and services of Electronic Mail.
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