B.C.A. DEGREE EXAMINATION, NOVEMBER 2017
Sixth Semester
Computer Applications
COMPUTER NETWORKS
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 X 2 20)
Answer all the questions.
1. Define computer network.
2. List out any two reasons that fiber optics is better than
copper wire.
3. What is frame header?
4. What is SLIP?
5. What is the purpose of routing algorithm?
6. What are the two interfaces in the ATM layer? How they
are distinguished?
7. Define transport entity.
8. Differentiate between socket and port.
9. What is cryptology?
10. How can you differentiate JPEG from MPEG?
Sub. Code
4BCA6C2
AFF-4594
2
WS6
Part B X 5 25)
Answer all questions by choosing either or
11. Explain the uses of computer networks.
Or
Write short notes on communication satellites.
12. Discuss about sliding window protocols.
Or
Describe the collision free protocol functions.
13. Explain the shortest path routing algorithm.
Or
Discuss the following terms.
Fragmentation
Firewalls
14. Explain the purpose of multiplexing.
Or
Write short notes on protocols for gigabit networks.
15. Write about electronic mail and its privacy.
Or
Explain about data compression.
AFF-4594
3
WS6
Part C X 10 30)
Answer any three questions.
16. What is ISDN? Explain the broadband and narrow band
ISDN?
17. Explain in detail about CSMA protocol services and
functions.
18. Write in detail about network layer functions in ATM
networks.
19. Write the functions of following internet transport
protocols.
TCP
UDP
20. Explain the following standards.
JPEG
MPEG.
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