Computer Communication and Network Msc IT University Of Sargodha (UOS) 2018

University of Sargodha

27881

M.Se ld Term Examination 2018

Paper: Coraputer Communication & Network (CMP-2540)

lowed: 2:30 Hours

Nate ofeir part copies Are i guestion true angetire pare

Maximum Marka: S

Objective Parti

(Compulsory)

Q.1.

Write short answers of the following in 2-3 lines each on your answer shoot@on.Com

ii.

• What are the differences between amplitude shift keying and frequency shift keying?

Why are protocols needed?

iii.

What is the difference between half-duplex and full-duplex transmission modes?

What type of addresses used in each of the following layers?.

a) Application

b) Network

c) Transport

v. If there is a single path between the source host and destination host, do we need a roater

between the two hosts?

Vi.

Distinguish between baseband transmission and broadband transmission.

ViL.

Define scrambling and give its purpose.

viii.

Define digital to analog conversion.

ix.

Describe the goal of multiplexing?

x.

What are two types of line configuration?

xi..

How does sky propagation differ from line-of-sight propagation?

xii.

What is refraction?

xili.

What is the difference between third and fourth generation cellular wireless networks?

xiv.

Is this a valid IP address? 192.168.256.80

XV.

What is meant by high speed thernet?

xvi.

What is flow control? Where it is implemented in OSI model?

Subjective Part: (4*12)

Q.2.

Wo rata the different types of error? Give error detection and correction techniques.

0.3. обо

ompare PCM with DM

b) Consider a noiseless channel with a bandwidth of 3000 Hz transmitting a signal with two

Q.4.

Q.5.

Q.6.

Q.7.

the categories of muitiplexing.

b) Give the architecture of celiular network.

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Explain the various physical structures of networks with test to architecture, speed, cost,

expansion and reliability!

a) Explain the types of analog-to-digital conversion

b) List three different techniques in serial transmission and explain the differences.

Explain TCP/I model with functionalities of each layer

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