DISTANCE EDUCATION
M.Sc. (Computer Science) DEGREE EXAMINATION,
DECEMBER 2017.
COMPUTER NETWORKS
(2007 onwards)
Time Three hours Maximum 100 marks
SECTION A — (10 x 3 30 marks)
Answer ALL questions.
1. What are the uses of Computer Networks?
2. List out the types of transmission media.
3. What is one-bit sliding window protocol?
4. Give the expansion for SLIP and PPP.
5. What is flooding?
6. What is an IP address?
7. Define multiplexing.
8. What is Remote procedure call?
9. Give an example for public-key algorithms.
10. What is Domain Name System?
Sub. Code
21
DE-2794
2
SP 5
SECTION B — × 10 40 marks)
Answer any FOUR questions.
11. Discuss on any two types of Network hardware and
software.
12. Write short notes on Communication Satellites.
13. Explain any two types of Multiple access protocol.
14. Discuss the congestion control algorithms in network
layer.
15. Write about the elements of transport protocols.
16. Explain the substitution ciphers and transposition
ciphers.
SECTION C — x 15 30 marks)
Answer any TWO questions.
17. Explain in detail about Reference Models.
18. Describe the concept of Error Detection and Correction.
19. Explain the concept of E-mail Security.