Madras University (UnOM) 2008 B.C.A Computer Application -exam question paper

APRIL 2008 OPERATIVE SYSTEM 46408/PK3D
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Time : 3 hours Maximum : 100 marks

PART A-----(10*3=30 MARKS)
all ques. carry equal marks.

1.Explain the main purposes of an Operative system.
2.Define turn around time .
3.Compare multiprogramming and multitasking.
4.List the method for handling dead locks.
5.Write a short note on counting semaphores.
6.What is the difference ranging from logical and physical address?
7.What do you mean by swapping ? Expalin with an example.
8. What is thrashing?
9.What is authentication?
10. List out the cause for using Demand paging.
11. What do you mena by spooling ?
12.What is threat monitoring?

PART-- B--(5*6=30 MARKS)
ans any 5 ques.
13. elaborate the factors to be considered in CPU scheduling?
14. elaborate the necessary conditions for deadlocks?
15.3 discuss direct communication in interprocess communication.
16.Write a note on Critical part issue.
17. Briefly define the single contigous allocation scheme.
18. explain about Virtual memory,
19.Discuss on different operations of a file.

PART- C ---(10*4=40 MARKS)
ans any 4 ques..
20.Describe the ssential properties of the subsequent operasting systems:
(a) Batch
(b) Time - sharing
(c) Distributed
21. define the steps to create a process. When the process terminated?
22. explain any 1 of the CPU scheduling with example.
23.Discuss the Banker's algorithm for deadlosk avoidance in detail.
24. discuss tyhe demand paging scheme with suitable example
25. discuss the different file access methods.


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Earning:   Approval pending.