Download PTU B.Sc CS-IT 2020 March 4th Sem 72322 Data Communication And Computer Networks Question Paper

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Roll No. EEEEEEEEEEE Total No. of Pages : 02
Total No. of Questions : 07
B.Sc.(CS) (2013 & Onwards) (Sem.-4)
DATA COMMUNICATION AND COMPUTER NETWORKS
Subject Code : BCS-406

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Time : 3 Hrs. Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.

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2. SECTION-B contains SIX questions carrying TEN marks each and a student has to attempt any FOUR questions.

SECTION-A

1. Answer briefly :
   1. Define Computer Network. List various types of computer networks.
   2. List various merits and demerits of bus topology.
   3. What is LASER transmission?

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   4. What is microwave transmission? How is it different from infrared transmission?
   5. What is broadband? What are its characteristics?
   6. Define CDMA. What is its significance?
   7. What is framing? What is its purpose?
   8. What is optimality principle?

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   9. Define TDM.
   10. What is significance of frequency spectrum?

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SECTION-B

2. Compare and contrast :
   1. Digital and analog transmission
   2. Synchronous and Asynchronous transmission

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3. What are various wired transmission Medias? Explain their merits and demerits.
4. What is TCP/IP model? How is it different from OSI reference model? Explain.
5. What are various data link layers design issues? Explain.
6. Define Ethernet. How is it different from token bus and token ring? Explain.
7. Write notes on the following :
   1. Characteristics of SLIP and PPP

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   2. Internetworking

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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