Anna University of Technology Tirunelveli 2010 B.Tech Information Technology B.e/ s,ember - Question Paper

B.E/B.Tech DEGREE exams NOVEMBER/DECEMBER 2010

FIFTH SEMESTER

COMPUTER SCIENCE AND ENGINEERING

CS 52 - COMPUTER NETWORKS
(Common to info Technology)

(REGULATIONS 2008)

Time: 3 house Maximum:100 marks


ans ALL ques.
PART A(10*2=10 marks)

1.How does sky propagation differ form line of sight propagation?
2.Mention the different LAN topologies?
3.Define Bridge?
4.Write notes on CSMA
5.How an ARP message gets encapsulated in a physical network?
6.Differentiate circuit switching with packet switching.
7.What do you mean by Adaptive Retransmission?
8.Write short notes on QoS.
9.State the importance of namespaces.
10.How do you establish a secure connection?

PART B(5*16=80 marks)

11(a). discuss different Logical Link control protocols in detail. (16)

Or

(b) (i). Write the original code using Hamming code algorithm if the code 11110101101 was received on receiver side.(6)
(ii). define Hybrid Multiple access techniques in detail.(10)


12 (a)(i). discuss Medium Access Layer Protocols in detail.(12)
(ii). explain the ways in which networking differs from OSI model.(4)

Or

(b) discuss IEEE 802.11 Wireless LAN standards in detail.(16)

13(a) (i) Write about IP Fragmentation and Reassembly.(8)
(ii) discuss the OSPF protocol in detail.(8)

Or

(b) (i) explain the ways in which IP datagrams are forwarded over the Internet.(8)
(ii) Write all the networks numbers and broadcast addresses if 50 subnets have been found from the network 121.136.147.20 (8)

14(a) (i) discuss the process involved in establishing a connection with TCP.(10)
(ii) discuss the significance of UDP pseudo header in Checksum calculation.(6)

Or

(b) discuss in detail how congestion could be avoided and controlled in packet transmission.(16)


15(a) discuss HTTP transaction and WWW with suitable real time examples.(16)

Or

(b) (i) discuss the significance of File Transport protocol.(8)
(ii) explain the architecture of Mail Transfer in detail.(8)

Earning:   Approval pending.