Dr Bhim Rao Ambedkar University 2007 B.Tech Information Technology Data Communications - Question Paper

Q-84
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2006

DATA COMMUNICATIONS

Day and Date: Monday, 15-05-2006 Total Marks: 100
Time: 3.00pm to 6.00pm

Instructions: 1) Attempt any 3 ques. from every part.

2) Figures to right indicate full marks.


SECTION-1

Q.1. a) discuss various transmission impairments that limits communication system Performa Nance.[Marks 10]

b) Compare analog and digital data transmission.[Marks 8]



Q.2. a) what is the difference ranging from unshielded twisted pair and shielded twisted pair? [Marks 8]

b) discuss optic fiber cable in detail.[Marks 8]



Q.3 a) what is DCE? And what is its function?[Marks 8]

b) discuss delta modulation technique.[Marks 8]



Q.4 a) discuss the differences ranging from NRZ-L and NRZ-I.[Marks 8]

b) elaborate the major disadvantages of asynchronous transmission?[Marks 8]



Q.5 a) How is synchronization is given for synchronous transmission? [Marks 8]

b) discuss circuit switching concepts.[Marks 8]





SECTION-1



Q.6. Compare OSI and TCP/IP reference model.[Marks 16]


Q.7. discuss n the functions of Presentation Layer and Application Layer of OSI reference model.
[16]

Q.8 Write a short notes on any three:[Marks 18=6*3]

a) LAN

b) MAN

c) Interfaces and services



Q.9. a) discuss various services given by data link layer to network layer.[Marks 8]

b) What is the need of flow control? [Marks 8]



Q.10.a) Describe-serial IP in detail.[Marks 8]

b) discuss the Data Link Layer in the Internet.[Marks 8]

Earning:   Approval pending.