MAHATMA GHANDHI UNIVERSITY (MG)
B.Tech.
DEGREE EXAMINATION, MAY / JUNE 2002
Branch: Computer Science Engineering
COMPUTER NETWORKS (R)
(New
Scheme - 1997 admission onwards)
Time:
Three Hours Maximum: 100 Marks
Part A
Answer
all questions.
1. Compare Bus and Ring topology.
2. What is Polling ?
3. Compare Virtual circuits and Datagrams.
4. What is Flooding
5. What are aloha systems ?
6. What is CSMA/CD ?
7. What (10 you meant by Quality of services ?
8. Describe the role of sessions layer.
9. Describe any one data compression technique.
10. Describe is Telnet ? (10 x 4 --- 40 marks)
Part B
Answer all questions. All questions cam, equal
marks.
11. (a) Explain ISO reference model. Or
(b)
Explain sliding window protocol.
12. (a) Explain adaptive routing algorithms. Or
(b)
Explain different congestion control algorithms.
13. (a) Explaill Ethernet networks.
(b)
Explain about satellite networks.
14. (a) Explain how transport layer performs
connection establishment and multiplexing. Or
(b) Explain how transport layer perform
connection rAease.
15. (a) I x plain bout cryptography. Or
(b) I x l) la i I I Clerent data compression
methods.
(5 x 12 60 marks)
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