Guru Gobind Singh Indraprastha Vishwavidyalaya 2009 B.E Computer Science Computer Network - Question Paper
COMPUTER NETWORK END PAPER 2008
This is the end term paper of computer network.
(Please write your Exam Roll No.) lixam Roll No.
Sixth Semester IB.Tech.1 May- 2008
Paper Code: ETIT306 Subject: Computer Network Paper Id: 31306 _ _(Batch: 2004-2005)
Time: 3 Hours Maximum Marks :75
Note: Attempt any five questions.
Q1 (a) If the transmitted code word is 10011000 and the received code word is 11001001. What is the error word? Write transmitted code word, received code word and error word as polynomials. (5)
vrfWhy transport layer protocols like TCP and UDP are called end-to-end
* protocols. What is the difference between them? (4)
(c) Differentiate between:- (6)
(Baseband co-axial cable and broad band coaxial cable (iiptical fibre and Twisted pair SMTP and SNMP
2 afWhat are the basic functions of the data link layer? Write down the basic features of HDLC protocol. Could HDLC be used as a data link protocol for a LAN? Justify your answer. (8)
{{>) The physical layer service is a non-confirmed service. Assume that some bits of data are lost during transmission over physical media, which layer will detect the loss and take some remedial measures: Explain any one method clearly depicting how this operation is performed. (7)
*p3rTVhat are the advantages of cell switching that is used in ATM? (5)
JJ>)Outline and discuss the main fields in Ethernet IEEE802.3 frame. What are the main objectives of preamble? (7)
'hat is the average number of transmission required to send a frame of ''length 1600 bytes correctly, if the bit error rate is IxlO"6. (3)
Q4 (a) Explain what is meant by the term Integrated services digital Network. Give three reasons a company might choose an ISDN link in preference to a leased line. (6)
(b) Subnet the class C network address 198.67.25.0 into eight subnets. Why are the 'all ones and all zeroes' subnets not used? (4)
(c) What do you understand by the term structured cabling'. State the main rules that should be used when installing a cable. Show that maximum cabling area for a LAN for horizontal cabling runs is approximately 200m. (5)
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