University of Sargodha M. Sc. 1. I. 2"d Term Exam 2014. 29 2692 Paper: Computer Communication & Network (CMP: 2540)

University of Sargodha

M. Sc. 1. I. 2"d Term Exam 2014.

29 2692

Paper: Computer Communication & Network (CMP: 2540)

Session: 2013-15

Maximum Marks: 80

Subject:

Time Allowed: 2:30 Hour

Note:

Objective part is compulsory. Attempt any four questions from subjective part.

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Objective Part

Q.1. Write short answers of the following questions in 2-3 lines only

(16*2)

i.

il.

iii.

iv.

V.

vi.

vii.

vili.

ix.

x.

xi.

xii.

xili.

XiV?

XV.

xVi.

What is baud rate?

What are the advantages of using layered architecture?

What is the difference between connection less and connection oriented protocol?

Why frequency domain analysis is more useful explain with example.

Why two units for bandwidth are used i.e. bps or Hz?

Explain multiplexing with suitable example.

What is CRC and why it is used?

Why ARP is and which is layer is responsible for this.

Is Virtual switched network is efficient than packet switched network? Justify your answer.

What is meant by error control and which layer is responsible for this.

Explain the difference between port address and MAC address.

Explain block coding with suitable example.

Describe the difference between TDM and FDM.

ARO

What are the different types of optical fiber?

What is SNR?

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Provide an example of wireless LAN protocol

Subjective Part (12"4)

Q.2.

Q.3.

Q.4.

Q.5.

Explain Cellular Wireless Networks in detail.

Explain CP/AP protocol suit with appropriate protocols on each layertadni.com

Discuss wired LAN topology with suitable examples.

What is unguided media? Write a note on

a. Radio wave

b. Microwave

Q.6.

Consider the string10000101 draw signaling diagram using Unipoler, Poler, Bipoler, Manchester

and differential Manchester.

Q.7. Discuss the working, pros and cons of circuit switching and packet switched networks

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