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

NOVEMBER 2008 46408/PK3D
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Time : 3 hours Maximum : 100 marks

PART - A --(10*3=30 MARKS)
ans any TEN ques.

1.What do you mean by Real time system?
2.Write the advantages of multiprogramming.
3.What are the necessary conditions for deadlock?
4.What do you mean by semaphore?
5.When does mutual exclusion need to be enforced?
6.Illustrate the external and internal fragmentation.
7.Define Segmentation
8.Write about overlays.
9.Give the structure of file system.
10.What do you mean by Access Control matrix?
11.What is SPOOLING?
12.What is threat monitoring?

PART-B--- (5*6=30 MARKS)
Answer any 5 ques.
13.What are the various performence
criteria for CPU scheduling algorithms?
14.Explain the life cycle of a process with neat diagram.
15.Explain the PCB in detail.
16.What is deadlock? How can you avoid it?
17.What is page fault? When do page faults occur?
18.Discuss about virtual memory?
19.Discuss on different operations of a file.

PART- C--(4*10=40 MARKS)

Answer any 4 ques.
20.Describe the essential propertiesof the
subsequent operating systems:
(a) Batch
(b) Time-sharing
(c) Distributed
21.Describe the interprocess communication.
22.Discuss the Banker's algorithm for deadlock avoidance in detail.
23.Explain different file access methods.
24.Explain the segmentation technique with the necessary diagrams.
25.Describe the most common schemes for designing the
logical structure of a directory

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Earning:   Approval pending.