University of Sargodha M.Sc. I. T, 1" Tern. Exam 2013 Subject: Information Technology Paper: Data Communication & Nehvork (IT: 530) Maximum Marks: 80

University of Sargodha

M.Sc. I. T, 1" Tern. Exam 2013

Subject: Information Technology Paper: Data Communication & Nehvork (IT: 530)

Maximum Marks: 80

Time Allowed: 2:30 Hours

Note:

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

Attempt all questions on your answer book.

(Objective) Marks: 16*2 = 32

Qi.

Virite short answers of the following in twn lines each on your answer book.

1. What is point to point connection?

What is the d terence boteen service poin adress, logical adiess and physical

What is multicas? What is the dilerence between Multicst and Unicat?

MAC

pomt -point

4. Mention the types of errors?

5.

Define Adhoc Networks?

me-one.

6. What do you mean by redundancy?

7. List the benefits of E2P network?

8. What is multiplexing?

9. What are the advantages of networking?

10. How data is transmitted over a medium?

Mulaple

11. What do you mean by CSMA? Cavie!

Sense

Rake Access.

12. What do you mean by wireless communication?

13. What do you mean by switching?

14. Define parity check?

15. Detinc Selective Repeat ARO?

16. What is HDLC

usta

2.

(Subjective)

.com

Explain different types of network structure/architecture?

Explain OSI refcrence model.

What is topology? Explain three most popular LAN topologies namely Bus, Ring and

Star?

Explain different types of switching methods?

6.

Explain IEEE 802.11 Architecture and services?

7, Explain Third-Gencration Systems and provide appropriate examplcs./

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