B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Fifth Semester
Information Technology
Elective — COMPUTER NETWORKS
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Define computer networks.
2. What is LAN?
3. Expand SLIP.
4. What is fragmentation?
5. What are the uses of Firewalls?
6. Expand RARP.
7. Define multiplexing.
8. Write any two uses of TCP.
9. Define Multimedia.
10. Expand DNS.
Sub. Code
1BITE2A
AFC-10404
2
Sp 1
Part B 5 25)
Answer all questions, choosing either or
11. Write a short note on Telephone Systems.
Or
Expound in short on Communication Satellites.
12. Write short note on HDLC.
Or
Explicate briefly on collision free protocols.
13. Give a note on ATM LANs.
Or
Discuss about Fragmentation.
14. Briefly explain on Crash Recovery.
Or
Illustrate the concept of buffering.
15. Explicate on cryptography.
Or
Write short note on SNMP.
Part C x 10 30)
Answer any three questions.
16. Explain the different layers in OSI reference model.
17. Elaborate the concept of Dlink protocols.
18. Describe any four routing algorithms.
19. Briefly explain the concept of Internet Transport
Protocols.
20. Write brief note for the following
Electronic Mail
Electronic Mail Privacy.
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