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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.4
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. (a) What is topology? Explain topologies in Data Communications?
(b) What are the various types of transmission modes and explain. [8+8]
2. What are the various methods available for error detection in error control? Briefly
explain? [16]
3. Explain about IBM’s Bisync Protocol? [16]
4. Draw the FDDI data frame structure and explain. [16]
5. (a) Differentiate between PAP and CHAP.
(b) Give an overview of different switching methods. [8+8]
6. (a) Differentiate between TE1 and TE2.
(b) Discuss about services and physical specification of broadband ISDN. [6+10]
7. (a) Discuss about VPC switch and routing with it used by ATM.
(b) Explain about Batcher-Banyan switch with it’s merits and demerits. [10+6]
8. (a) Elaborate on the concerns addressed by the designers of SONET.
(b) List different SONET/SDH rates.
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