Nalanda Open University 2010 M.C.A Computer Aplications Master of Computer Application Part–I, –IX (Data Communication & Networks) Annual , - Question Paper
Master of Computer Application Part–I, Paper–IX (Data Communication & Networks) Annual Examination, 2010
IN ALAIN DA OPEN UNIVERSITY Master of Computer Application Part-1, Paper-IX (Data Communication & Networks)
Annual Examination, 2010 Full Marks : 80 Time : 3 Hours.
Answer any Five Questions. AU questions carry equal marks.
1. (a) Explain the difference between Client/Server and peer-to-peer architecture.
(b) What are the various types of Netw ork ? Explain in context of structure.
2. Explain the difference between OSI model and TCP model ? Also describe the draw backs of OSI model.
3. (a) What is the difference between Synchronous. Asynchronous and Isochronous
transmission.
(b) Explain the concept of multiplexing with suitable examples.
4. Why switching is necessary ? How does circuit switching differ from packet switching.
5. How does the sliding window' protocol increase the utilization of bandwidth ? Explain.
6. How' does slotted ALOHA improve the performance of the system one pure ALOHA ? Explain.
7. Why are connection oriented services known as reliable services. Explain briefly. Differentiate between Adaptive and non-Adaptive routing.
8. Differentiate between congestion control and Flow' control. Why tunneling is used ?
9. List the importance of using computer Netw ork in Airline and Railw ay Reservation System ?
10. Explain various types of transmission media ? Compare and Contrast various Network topologies.
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