B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Sixth Semester
Computer Science
COMPUTER NETWORKS
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Define network.
2. What is LAN?
3. How do you use twisted pair?
4. What is MODEM?
5. What is meant by framing?
6. What is ALOHA?
7. Mention the uses of datagram.
8. What is flooding?
9. Why DNS was invented?
10. Expand MIME.
Sub. Code
4BCE6C1
AFF-4568
2
Ws15
Part B x 5 25)
Answer all questions by choosing either or
11. Write down the uses of computer networks.
Or
What are internet works? Explain.
12. Write short notes on microwave transmission.
Or
What is GSM? Explain.
13. Describe error detection methods.
Or
Explain the significance of Ethernet.
14. Illustrate the design issues in network layer.
Or
What are the elements of transport protocols?
Explain.
15. What is WWW? Explain.
Or
Write a brief note on public key algorithm.
AFF-4568
3
Ws15
Part C x 10 30)
Answer any three questions.
16. Explain the OSI reference model with diagram.
17. Discuss the structure of a telephone system.
18. Illustrate on elementary data link protocols.
19. Explain the shortest path routing algorithm.
20. Describe the symmetric key algorithms with suitable
example.
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