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Reg No.:_ Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019
Course Code: EC407
Course Name: COMPUTER COMMUNICATION
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Write in detail how all the layers in OSI model work together for networking. (10)
b) Differentiate circuit switching and packet switching. (5)
2 a) Explain the architecture of IEEE 802.11 with suitable diagram. (10)
b) Explain how framing is done by data link layer. (5)
3 ஐ Explain how error control is done in the data link layer. Give an example. (8)
b) Explain different flow control mechanisms adopted by data link layer. (7)
PART 13
Answer any two full questions, each carries 15 marks.
4 a) Explain classfull and classless addressing (5)
b) Describe the functionalities of the network layer. Explain the IP packet format (10)
with a neat diagram.
5 a) What is routing? Explain its different types. (൭)
b) Apply Dijkstra’s Algorithm to find the shortest path from the source 11060 5 1081 (10)
other nodes in the figure given below:
6 a) What are the problems associated with distance vector protocols. How is it (5)
overcome in other routing protocols?
b) How can we distinguish a multicast address in IPv4 addressing? How can we 40 (10)
so in IPv6 addressing? With the help of an example, explain the CIDR scheme.
PART ட்‌
Answer any two full questions, each carries 20 marks.
7 a) Draw the TCP segment header format. Explain the various fields in the TCP )7(

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