LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.C.A. DEGREE EXAMINATION – COMPUTER APPLICATIONS
FIFTH SEMESTER – NOVEMBER 2010
CA 5504 - OPERATING SYSTEM
Date : 29-10-10
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART - A
Answer ALL the questions
(10 x 2 = 20 marks)
1. Define process
2. What is meant by system call?
3. Mention the ways for process termination
4. What do you mean by light weight processes?
5. What is meant by BIOS?
6. Define overlays
7. What is device controller?
8. What is the use of network terminal?
9. Writ the meaning of the following file extension
file.bak file.hlp
file.pdf file.zip
10.What is meant by persistent file?
PART - B
Answer ALL the questions
(5 x 8 = 40 marks)
11. a) Explain the functioning of a system call “read”.
(Or)
b) Explain Operating System structure.
12. a) Explain various process states.
(Or)
b) Discuss about critical region.
13.a) Discuss Virtual Memory.
(Or)
b) Explain swapping in memory management.
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14.a) Discuss the goals of I/O Software.
(Or)
b) Explain Direct Memory Access.
15.a) Discuss the important file attributes.
(Or)
b) Explain Two-Level Directory System.
PART - C
Answer Any TWO questions
(2 x 20 = 40 marks)
16.(a). Discuss the tasks of operating system.
(b). Explain Deadlock Detection and Recovery.
17.(a). Explain Page Replacement algorithm.
(b). Explain I/O Software layers
(10)
(10)
(10)
(10)
18.(a). Compare the features of UNIX & Windows.
(b). Discuss memory segmentation.
(10)
(10)
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