APRIL 2021 56415/PSB3G
Time : Three hours Maximum : 75 marks
PART A — (10 × 1 = 10 marks)
Answer any TEN questions.
1.What are the uses of computer networks?
2.Define Intranet.
3.What is Multiplexing?
4.Define Error detection.
5.What is frame header?
6.Define piggybacking.
7.What is IP protocol?
8.Expand ICANN.
9.What is flooding?
10.Define transport entity.
11.What are the primitives of transport service?
12.Define TSAP.
PART B — (5 × 5 = 25 marks)
Answer any FIVE questions.
13.Explain Network software.
14.Briefly explain TCP/IP reference model.
15.Write short notes on microwave transmission.
16.What is error detecting code? Explain it.
17.Briefly explain simplex stop and wait protocol.
18.What is congestion control algorithm? Explain it.
19.Briefly explain finite state machine with an example.
PART C — (4 × 10 = 40 marks)
Answer any FOUR questions
20.Discuss OSI reference model.
21.Explain guided transmission media.
22.What is multiple access protocol? Explain it.
23.Explain Dynamic channel allocation in LAN’s and MAN’s.
24.Discuss about routing algorithms.
25.What are the elements in transport protocol? Explain it.
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