MU Electronics and Telecom Engineering (Semester 7)
Computer Communication Networks
May 2012
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


1 (a) Discuss various network topologies along with the advantages and disadvantages of each.
8 M
1 (b) Explain the ISI-OSI network model and discuss the functions of each layer.
12 M

2 (a) Explain the Go-back and selective reject techniques of sliding window ARQ
10 M
2 (b) List the various networking and internetworking devices and explain their working in detail.
10 M

3 (a) Discuss the various configurations, modes and frame types of HDLC in detail
10 M
3 (b) Compare circuit switching , packet switching and message switching.
10 M

4 (a) Explain distance vector routing in detail.
10 M
4 (b) Draw an IP datagram header and explain the function of every field.
10 M

5 (a) What is IP fragmentation? Why is it needed? Explain with an example.
10 M
5 (b) Compare TCP and UDP
10 M

6 (a) Explain the M/M/1 model of queuing theory.
10 M
6 (b) Explain ARP and RARP protocols in detail.
10 M

Write Short Notes on:
7 (a) IEEE standards
7 M
7 (b) Dijkstra's algorithm
7 M
7 (c) Classful addressing.
6 M



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