(Time: 3 Hours) Total Marks: 100
N.B.: 1) Question No.1 is compulsory.
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2) Attempt any four from the remaining six questions.
3) Figures to the right indicate full marks.
Q1. (a) Explain OSI Model with the functionalities of each layer in detail with neat diagram. [10]
(b) Explain CSMA, CSMA/CD and CSMA/CA in detail. [10]
Q2. (a) (i) Show how an error is detected using hamming code with example. [05]
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(ii) Construct the cyclic redundancy code for the frame sequence 1101011011 and the generator is 10011. [05]
(b) Explain the stop-and-wait protocol in detail. [10]
Q3. (a) What is asymmetric key encryption? Explain RSA crypto system with suitable example. [10]
(b) Define Congestion. Explain different methods of handling congestion. [10]
Q4. (a) Discuss Ethernet standards in detail. [10]
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(b) What is optimality principle? Explain shortest path routing with example. [10]
Q5. (a) What is ARP? Explain how the host get its physical address using ARP with a suitable example. [10]
(b) Discuss IPV4 frame format in detail. [10]
Q6. (a) Explain TCP connection establishment and termination in detail. [10]
(b) Discuss the IPV4 addresses with formats and special addresses [10]
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Q7. Write Short notes on any four of the following: [20]
(a) ASK,FSK and PSK
(b) HTTP
(c) LEO, MEO, GEO
(d) Pure Aloha
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(e) Wired media
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