B.C.A. DEGREE EXAMINATION, APRIL 2018
Sixth Semester
Computer Application
COMPUTER NETWORKS
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is Distributed Systems?
2. What is the difference between Circuit switching and
Packet switching?
3. What is Hamming Distance?
4. What is ALOHA?
5. Why do we need Firewall?
6. What is meant by Tunneling?
7. What do you mean by Upward Multiplexing?
8. What is Two-Army-Problem?
9. Define Cryptography.
10. What is the use of Data compression?
Sub. Code
1BCA6C2
AFC-10676
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wk12
Part B x 5 25)
Answer all questions choosing either or
11. Explain the Narrowband ISDN.
Or
Explain any two transmission media.
12. Discuss the Data Link Layer design issues.
Or
Write short notes on Petri net models.
13. Explain the design issues of Network Layer.
Or
Explain the working of ATM LAN's.
14. Explain how connections are established?
Or
Explain the functions of TCP.
15. Write short note on Network Security.
Or
Explain the Email privacy.
Part C x 10 30)
Answer any three questions.
16. Explain the functions of various layers in OSI reference
model.
17. Explain any two elementary Data Link protocols.
AFC-10676
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wk12
18. Explain ICMP Connection Setup.
19. Describe the Internet Transport Protocols.
20. Explain the Public key algorithms.
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