MU Computer Engineering (Semester 5)
Computer Network
December 2013
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Answer any four :-
1 (a) What are the different categories of the network calssification?
5 M
1 (b) Compute the Hamming Code for the data - 1001101
5 M
1 (c) State the reasons for having a minimum length requirement for a frame in Ethernet. How is it achived?
5 M
1 (d) What are the advantages and disadvantages of hierarchical routing?
5 M
1 (e) State the reasons why Network layer and Transport layer are kept as two distinct layer even through their services are so similar.
5 M

2 (a) Explain the function of the different Network Hardware Components.
10 M
2 (b) Explain sliding window protocol. Draw the sender and receiver window fo a system using Go-Back-N sliding window (size=8) given that-
(i) frame 0 is sent; frame 0 is ACK
(ii) frame 1 and 2 are sent; frame 1 and 2 are ACK
(iii) frame for 3,4,5 are sent; frame 4 is ACK.
(iv) timer for frame 5 expires.
(v) sender resets the window and 4 more frame are sent.
10 M

3 (a) Make a comparitive study of Switches Ethernet, Fast Ethernet and Gigabit Ethernet.
10 M
3 (b) Draw and explain the architecture and protocol stack of Bluetooth.
10 M

4 (a) What are the steps involved in Link state routing. Explain the contents and the requirements of Link state packets.
10 M
4 (b) Explain the various methods for congestion control used in datagram subnets.
10 M

5 (a) Show the different protocol scenario for establishing a connection using 3-way handshake in the transport layer.
10 M
5 (b) Explain the different protocol in the MAC sublayer which uses carrier sensing.
10 M

6 (a) Show the usage of the different socket programming primitives used for establishing a connection between client and server.
10 M
6 (b) Explain HDLC protocol.
10 M

Write notes on (any two ):-
7 (a) Satellite Networks
10 M
7 (b) QoS requirements
10 M
7 (c) IP header format.
10 M



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