North Maharashtra University 2010 B.E Computer Science and Engineering Data Communication /e - Question Paper
DATA COMMUNICATION MAY - JUNE 2010
Time: Three Hours 3 M M,rfcs = m
UNIT-1
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1. a) What is Communication, Tele communication, Data,
Data communication and Data representation ? 5
b) Explain design issues of layer* 5
2 p) What is Topology ? What arc the basic type* oi topology ? S q) Explain with neat diagram LAN, WAN and MAN and
Internetworks 5
3, x) What is Signal, Analog Signal, Digital Signal, Data me
limits and Tianamosion Impairment ? 5
y) What is Throughput, Propagation tpeed Propagation
time, Wavelegth 7
4. a) Explain what is line coding ? Abo explain *iih hdpof
waveforms unipolar scheme* poUr sdieme, bipolar
scheme and other schemes b) Explain tn detail 56 K MODEM p) Expttm in detaii block coding
q) Compare ASK with FSK
6. x) Explain Modem standards and traditional modem.
* y) What is modulation ? Why it is needed ? What are the types of modulation ? Explain PM.
UNIT-III
b) Explainindetatf tnmamissionmedia.
S. p) Compare circuit switching with packet sw
q) Explain components ol telephone networks. Also explain LATAs.
9. x) Compare WDM with TDM y) Compare radio wave, microwaves and mfhred
UNIT-IV
10. a) What is error ? What are the type* of error ? What ts Afl
and FEC ?
1
b) Compare OO-BACK N with Scfective-Rcpeat
11. p) Compare flow control wuh error control
q) Whal is Hamming code ? Explain wWi neal aaampte how a Hamming code is calculated and hi! pocibon of error is defected.
IX x) Whtf is CRC? Calculate CRC checksum for the
menage polynomial G(x)*x x* wfch the help of generator polynonual p(x) - x V
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| Earning: Approval pending. |
