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Posted By: ram Member Level: Diamond Posted Date: 31 Aug 2008
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2005 Jawaharlal Nehru Technological University Computer Science & Engineering III B.Tech. I Semester Regular Examinations, November -2005 DATA COMMUNICATIONS Question paper
Code No: RR310503 Set No.1
III B.Tech. I Semester Regular Examinations, November -2005
DATA COMMUNICATIONS
( Common to Computer Science & Engineering, Information Technology
and Computer Science & Systems Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Explain Analog transmission for Analog signal, and Digital transmission for Analog
signal clearly with examples. [16]
2. Determine the BCS for the following data and CRC generating polynomials?
DataG(x) = x7+x5+x4+x2+x1+x0
Generator(x) = x5+x4+x1+x0
[16]
3. (a) Define data link protocol?
(b) What is ISO OSI model and explain. [3+13]
4. (a) What are the differences between Base band versus Broadband
Transmissions. [16]
5. (a) Differentiate between PAP and CHAP.
(b) Give an overview of different switching methods. [8+8]
6. (a) What is ISDN? Describe the services provided by it.
(b) Discuss the evolution of ISDN. [10+6]
7. Explain the different attributes to control traffic in frame relay. Also find the
relationship between them. [16]
8. Discuss the location of overhead information for each SONET layer.
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