Bharathiar University 2008 M.C.A - Question Paper

Q.P.Code:[05 MCA 24]
(For Candidates admitted from 2005 onwards)
M.C.A DEGREE EXAMINATION,NOVEMBER 2008.
3rd Semester
COMPUTER NETWORKS
Time: 3 hours Maximum:75 Marks
ans ALL ques..
SECTION-A-(10 X 1=10 MARKS)
1.Which 1 of the subsequent is not a networking hardware?
a.hub
b.SMPS
c.Switch
d.None

2.A collection of independent computers appears to its users as a single coherent system in a -------------------
a.Computer network
b.Distributed system
c.Super computer
d.None

3.---------- is a guided transmission medium
a.Radio
b.Microwave
c.Infrared
d.Juristed pair cable

4.In ---------- the cellphone is acquired by the new base station before the previous 1 signs off with no loss of continuity
a.Soft handoff
b.Hard handoff
c.Medium handoff
d.All

5.A set of rules governing the communication betweeen the computers in a network is called
a.Frames
b.Protocol
c.Layers
d.None

6.--------------- is an fault correcting code.
a.Hamming code
b.Parity
c.CRCL
d.None

7.--------------- is a static routing algorithm.
a.Distance vector routing
b.Link state routing
c.Flooding
d.None

8.The variation in the arrival time of packets belonging to an audio or video application is called
a.Load shedding
b.Delay
c.Jitter
d.All

9.Expansion of DNS is
a.Domain Name System
b.Distributed Network System
c.Domain Network System
d.None

10.Cryptography means
a.Secret writing
b.Graphical writing
c.Crypt writing
d.None

SECTION-B (5 X 5=25 MARKS)

11.a) Brief on broadcast networks.
or
b) Bring out the difference ranging from unicast,multicast and broadcast.

12.a) Write short note on CDMA.
or
b) Write short note on fibre optic cable.

13.a) discuss bit stuffing with an example.
or
b) Distinguish ranging from a hub,switch and a router

14.a) State the idea behind link state routing.
or
b) discuss IP address formats.

15.a) describe i) Ciphertext ii) Cryptanalysis.
or
b) Brief on any 2 application layer protocols.

SECTION-C (5 x eight =40 MARKS)

16.a) explain in detail the uses of a computer network.
or
b) discuss in detail different kinds of networks.

17.a) Compare circuit switching and packet switching
or
b) explain in detail any 3 guided transmission media.

18.a) discuss in detail fault detection or fault correction codes.
or
b) explain in detail the design problems of data link layer.

19.a) discuss in detail the elements of transport protocols.
or
b) Write notes on:
i) Silly window syndrome
ii)TCP congestion control

20.a) Write detailed notes on E-mail.
or
b) discuss in detail:
i) Substitution ciphers.
ii) Transposition ciphers.
___________________

Earning:   Approval pending.