IV Semester B.A./B.Sc. Examination, May/June 2013 (Semester Scheme) COMPUTER SCIENCE Computer Networks (Special Paper) (Only for the Repeaters Students of B.A/B.Sc. Offering Computer Science as Optional) Time : 3 Hours
Max. Marks : 90
Instruction : Answer all Sections. SECTION – A Answer any ten questions :
(2×10=20)
1. What is a Computer Network ? Mention any two goals of computer network. 2. Differentiate between Simplex and Duplex modes of data communication. 3. Give any two features of synchronous transmission. 4. What is unguided media ? Give one example. 5. What is Multiplexing ? Mention its types. 6. What are the types of errors that can occur during data transmission ? 7. What are the advantages of Broadband ISDN ? 8. Define Inter networking. 9. What is FDDI ? 10. List any two session layer services. 11. What is Data Encryption ? 12. What is a Firewall ? P.T.O.
*MS668*
MS – 668 SECTION – B Answer any five questions :
(5×5=25)
13. Explain any two Network topologies. 14. Write a note on Modem. 15. Explain Asynchronous transmission. 16. What are the functions of Physical Layer ? 17. What are the services offered by the Transport Layer ? 18. Explain RPC. 19. Explain Frequency Division Multiplexing. 20. Write a note on Digital Signatures. SECTION – C Answer any three questions :
(15×3=45)
21. a) Explain the classification of networks. b) Explain TCP/IP model.
9 6
22. a) Explain how optic fibre is used as guided media in data transmission ? b) Explain the EIA-530 interface standard used for serial transmission. 23. a) Write a note on Error Detection and correction. b) Explain Distance Vector Routing. 24. a) Write a note on various network devices. b) Explain any one data compression technique. 25. a) What are the functions of Session Layer ? b) Explain Public Key Encryption. ———————
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places the student at the center of the learning experience. Forouzan's Computer ... fun as well. The appealing visual layout combines with numerous figures and examples to provide multiple routes to ... Data Communications and Networking.
Make a diagram of the. network, showing the various modes and what they actually represent (Computers,. Printers ... Displaying Computer Networks 1.pdf.
