C F192048 Pages:2

Reg No.:_ Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SIXTH SEMESTER B.TECH DEGREE EXAMINATION(S), DECEMBER 2019
Course Code: CS306
Course Name: COMPUTER NETWORKS

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 3 marks. Marks
1 What are service primitives in computer networks? (3)
2 Differentiate between | persistent and p-persistent CSMA. (3)
3 Draw the frame format of Ethernet. (3)
4 List the features of LAN. (3)
PART छ
Answer any two full questions, each carries 9 marks.
5 9७3) Explain Stop-and-wait, Go-Back-N and Selective Repeat ARQ techniques. (6)
b) Differentiate between connection oriented and connectionless services. (3)

6 9) How computer networks are categorized based on transmission technology and (6)

scale? Explain the features of each network.

b) Distinguish between bit stuffing and character stuffing in framing. (3)
7 ஐ Explain about the MAC protocol in Ethernet. (5)
b) With the TCP/IP protocol stack, explain TCP/IP Reference model. (4)
PART C
Answer all questions, each carries3 marks.
8 List the features of RIP. (3)
9 List the message types in OSPF. (3)
10 What is IP subnetting? Illustrate with example. (3)
11 List the IP address ranges and subnet masks of class A, class B and class 0. (3)
PART D
Answer any two full questions, each carries9 marks.
12 a) _ Illustrate distance vector routing algorithm with an example. (5)
b) Differentiate classfull and classless addressing schemes (4)
13 a) Explain OSPF routing algorithm. (5)
b) Discuss about any two congestion control algorithms. (4)
14 a) How routing is handled in mobile hosts? (4)

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