M.C.A DEGREE EXAMINATION,
APRIL 2016
COMPUTER NETWORKS
(Common for M.C.A.(R)/WE)
(2012 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
1. Define Computer Network.
2. What is Signal to Noise Ratio?
3. What are the functions of data link layer?
4. What is flow control? Mention it types.
5. Define flooding.
6. Define Broadcast.
7. What is meant by Remote Procedure Call?
8. Define browser.
9. What is symmetric key cryptography?
10. Define cipher text with an example.
Part B 5 25)
Answer all questions, choosing either or
11. Describe the need of Fiber optical cable.
Or
Explain coaxial cable.
Sub. Code
541303/
545303
RW-10963
2
Wk 3
12. Explain Go-back n ARQ.
Or
Explain CSMA/CA.
13. What is Packet Switching? Explain.
Or
Explain Message Switching.
14. Write about TCP.
Or
Explain about HTTP.
15. Explain transposition ciphers technique in
cryptography.
Or
Describe the AES Algorithm.
Part C 10 30)
Answer any three questions.
16. Explain the categories of Networks. Describe.
17. Explain Error detection and correction techniques in data
link layer.
18. Explain the shortest path routing algorithm with an
example.
19. Explain in detail about electronic mail architecture and
its transmission technologies.
20. Explain DES cryptographic technique with an example.