Computer Communication Networks - May 2012

Electronics & Telecomm. (Semester 7)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever 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)