Cochin University of Science and Techology (CUST) 2005-7th Sem B.Tech Computer Science and Engineering (Supplementary) , , CS 701 Computer Networks - Question Paper
B. Tech. Degree VU Semester (Special Supplementary)
Examination, May 2005
CS 701 COMPUTER NETWORKS (1999 Admissions onwards)
Tin*; 3 Hocn Maxtmun Marti: 1(10
). (a) Wh&( ire protocols, layers and ioterfrce*'? Expiaic 0c conccpt of layering. (12)
(b) Wrile riwrt oocei oo FDDI. (*)
OR
II. (a) Explain different ALOHA protocols. (*)
(b) Wriie oote* on ISDN. O)
(c) Dccis vinous app}icatioc areas of computer artworks. (4)
ni. (a) Explain sliding window protocol. )
(b) What a piggy tcVin? } (20)
(c) Explain synefaronous and asynchronous transnussioa. }
OR
IV. (s) Coxpure CRC checkscm for the for the following message 11 0 10 11 011 osir# (be
following generate* polynomial x* + ** + 1. 00)
(b) Whai it framing? Discuss diffsrcct framing methods u&ed m Dia Link l-ayei. (10)
V. (a) Discuss the diffeience between adaptive and nocsdpative roving- E*piaro *ny oo
adaptiva rooting algorithm. (10)
(b) Explaia tbe following:
(i) Broadcast routing
(ii) Hierarchical routing
(liO Multipath routing 00)
OK
VI. (ft) Explain the format of I? header. 0) (b) Explain Ihc following:
(i) lPaAiressing 00 ARP tad HARP (>0)
vil. () ExpUm the format of UPD datagram. 0)
(b) Explain flow control and buffering io transport layer. 00)
OR
V[U. (a) U tiw packet delivery tn intaraet reliable or unreliable? (6)
(h) Writ* notes oo:
(i) TCP segment format
(ii) DNS
(iii) C*sh recovery in transport layer (H)
IX. (a) Explain dinereat fenctioas of session layer. 0)
(b) Diwiua substitution ciphers and tniupostrioo ciphers. 00)
OR
X (a) Explain pebltc key cryplognphy. (*)
(b) Write short notes on:
(i) Data contpre&sion algorithm
(ii) Abstract syntax rotation
(hi) Digtfsl ngrtamr (12)
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