| DATA COMMUNICATION |
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| PUT ON: Dec,2K2 |
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EC-426 DATA COMMUNICATION (B.Tech 8th Semester,2122) Time : 3 Hours Maximum Marks : 60 NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from Section B and any two questions from Section C Section-A Marks : 20 1(a) What are the advantages of using Fibre optics to coaxial cables? (b) What is a Transponder? (c) Differentiate RS-232 from RS-449. (d) Which of the OSI layer handles each of the following: (i) Providing Synchronization. (ii) To manage dialouge control? (e) How a wire-centre works for IEEE 802.5 ? (f) Why switching is used in computer networks? Write different types. (g) What are various computer topologies and which one is the most preffered one? (h) What is Routing and who manages it in Computer Networks? (i) What is the use of Protocols in Networks? (j) What is ISDN? Section-B Marks:5 Each 2. Explain the following: (a) Co-axial cables (b) Fibre Optics. 3. What are various Modulation Techniques used in Telphone Systems? Explain. 4. What are various design issued for Data Link Layer? 5. Explain two types of Switching Techniques used in Computer Networks. 6. What is ALOHA? Also compare its two types. Section-C Marks : 10 Each 7. Explain OSI Reference Model giving function of each layer. 8. What are various design issues for Transport and Application layers? 9. (a) What are various Data Compression Techniques? (b) Write notes on any two: (i) CSNET (ii)FDDI (iii) ARCNET. |
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