LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION - COMPUTER SCIENCE
THIRD SEMESTER – APRIL 2008
BH 24
CS 3808 - COMPUTER NETWORKS
Date : 26/04/2008
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART-A
ANSWER ALL THE QUESTIONS
10 X 2 = 20
1. List out the uses of Computer Networks.
2. Write any two advantages of coaxial cable.
3. Define: Hamming distance. Give an example.
4. What is piggybacking?
5. List some of the internet control protocols used in the network layer.
6. Differentiate between unicast and multicast routing.
7. Why DNS is essential in the application layer?
8. Define Cryptography.
9. What is kerckhoff’s principle?
10. List the data compression techniques.
PART-B
ANSWER ALL THE QUESTIONS:
5 X 8 = 40
11. a) Write a short note on any two OSI Reference model.
(Or)
11. b) Differentiate between frequency division multiplexing and time division multiplexing.
12. a) Compare Static and Dynamic Channel Allocation in LANs and MANs
(Or)
12. b) Give a short note on fast Ethernet.
13. a) Explain about Bluetooth Application
(Or)
13. b) What is tunneling? Give a real time example.
14. a) What are the possible scenario for a transport connection?
(Or)
14. b) List down the states used in TCP connection management finite state machine.
15. a)Give a brief note on the design issues of presentation layer.
(Or)
15. b) Explain about file transfer.
PART –C
ANSWER ANY TWO QUESTIONS:
2 X 20 = 40
16. a) Differentiate between TCP/IP and OSI reference model.
b) Discuss in detail about design issues of data link layer.
17. Explain the principles of Network layer in the Internet.
18. a)What is cryptographic? Write a note on two principles of cryptographic.
b) What is the use of file management? Give a real time example.
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