NOVEMBER 2021 COMPUTER NETWORKS -PSB3G UNIVERSITY QUESTION PAPER

 

NOVEMBER 2021 COMPUTER NETWORKS -PSB3G

 

Time : Three hours                                Maximum : 75 marks PART A — (10 ´ 1 = 10 marks)

Answer any TEN questions.

 

1.               Define protocol hierarchies

2.               What is Ethernet?

3.               Define trunks

4.               What is framing?

5.               Define band width

6.               What is data link layer?

7.               What is flow control?

8.               Define Transmission control protocol

9.               What is broadcast routing?

10.            Define load shedding.

11.            Define one time pads.

12.            What is Berkeley sockets?

PART B — (5 ´ 5 = 25 marks) Answer any FIVE questions.

13.            Briefly explain network software.

  14.            Write short notes on WAN.

 15.            Give the structure of telephone system.

 16.            Briefly explain the light wave transmission.

 17.            What is collision free protocol? Explain it.

18.            Briefly explain STORE and FORWARD packet Switching.

19.           Briefly explain the socket programming with an example.

 

PART C — (4 ´ 10 = 40 marks) Answer any FOUR questions.

20.            Discuss about TCP/IP reference model.

21.            Explain the role of satellites in communication.

22.            Describe the public switched telephone network.

23.          Explain the one bit sliding window protocol.

24.          Discuss about network layer design

25.        What is cryptography? Explain it.