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Computer Communication & Telecom Networks - May 2012
Electronics & Telecomm. (Semester 6)
TOTAL MARKS: 80
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.
1 (a) Discuss various network topologies along with the advantages and disadvantages of each.(8 marks)
1 (b) Explain the ISI-OSI network model and discuss the functions of each layer.(12 marks)
2 (a) Explain the Go-back and selective reject techniques of sliding window ARQ(10 marks)
2 (b) List the various networking and internetworking devices and explain their working in detail.(10 marks)
3 (a) Discuss the various configurations, modes and frame types of HDLC in detail(10 marks)
3 (b) Compare circuit switching , packet switching and message switching.(10 marks)
4 (a) Explain distance vector routing in detail.(10 marks)
4 (b) Draw an IP datagram header and explain the function of every field.(10 marks)
5 (a) What is IP fragmentation? Why is it needed? Explain with an example.(10 marks)
5 (b) Compare TCP and UDP (10 marks)
6 (a) Explain the M/M/1 model of queuing theory.(10 marks)
6 (b) Explain ARP and RARP protocols in detail.(10 marks)
Write Short Notes on:
7 (a) IEEE standards(7 marks) 7 (b) Dijkstra's algorithm(7 marks) 7 (c) Classful addressing.(6 marks)