MAHATMA GHANDHI UNIVERSITY (MG)
B.TECH. DEGREE EXAMINATION, OCTOBER/NOVEMBER
2003
Computer Science and Engineering
COMPUTER NETWORKS (R, I)
COMPUTER NETWORKS (R, I)
Time: Three Hours Maximum: 100 Marks
Part A
Answer
all questions. Each question carries 4
marks.
1. Explain the principle of sliding window
protocol.
2. Explain the advantages of LAN.
3. What is a datagram? Explain.
4. Explain Query Flooding.
5. Explain the finite population ALOHA.
6. Write notes on IEEE standards.
7. List the Quality of Service (QOS) parameters and
explain:..
8. What are the goals of transport layer ? Explain.
9. What is meant by source encoding ? Explain with
examples.
10. Explain the two fundamental principles of
cryptography. (10 x 4 40 marks)
Part B
Answer all questions. Each question carries 12
marks.
11. (a) What
is meant by ISDN ? What are its services ? Explain in detail the ISDN
architectur.e.,
Or
(b) Draw the OSI refefence model and explain the
functions of different layers.
12. (a) Explain
any two routing algorithms with examples. Or
(b) Explain centralised routing and
decentralised routing.
13. (a) Explain in detail the communication
satellites with their properties. Or
(b) Explain in detail the CSMA/CD protocol and
compare CSMA with CSMA/CD.
14. (a) Explain TCP protocols. Or
(b)
Discuss the implementation of RPC (Remote Procedure Call).
15. (a) Explain in detail the different data
compression techniques. Or
(b) Write
notes on : (i) Virtual terminal. (ii) Electronic mail.
(5 x 12 ----- 60 marks)
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