Dr Bhim Rao Ambedkar University 2006 B.Tech Information Technology Data Communications -university question paper

H-421
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2006

DATA COMMUNICATIONS
Total Marks: 100
Time: 2.30pm to 5.30pm

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

2) Figures to right indicate full marks.


SECTION-1


Q.1. discuss synchronous and asynchronous transmission and compare them.[ Marks 18]


Q.2. a) discuss coaxial cable in detail.[Marks 8]

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



Q.3 a) discuss the Full Duplex and Half Duplex Data transmission.[Marks 8]

b) discuss how frequency division multiplexing (FDM) works.[Marks 8]



Q.4. a) discuss the differences ranging from amplitude shift keying and frequency shift keying. [Marks 8]

b) discuss the space division switching.[Marks 8]

SECTION-2

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 Compare connection oriented and connectionless services.[Marks 16]



Q.9. a) what types of errors will be detected using CRC? Justify your ans.[Marks 8]

b) discuss simple stop and wait protocol.[Marks 8]



Q.10. discuss sliding window protocol using Go Back n in detail. Marks 16]

Earning:   Approval pending.