DISTANCE EDUCATION
M.Sc. (Software Engineering) Years Integrated) DEGREE
EXAMINATION, MAY 2016.
OPERATING SYSTEMS
Time Three hours Maximum 100 marks
SECTION A — 8 40 marks)
Answer any FIVE of the following questions.
1. What are the services provided by the operating system?
2. Explain in brief about semaphores.
3. Write a note on round robin scheduling.
4. Explain the function of interrupt handlers.
5. Give a note on deadlock prevention and avoidance.
6. Write a note on swapping.
7. Explain about virtual memory.
8. Give a note on directory structure.
SECTION B — × 15 60 marks)
Answer any FOUR questions.
9. Discuss the following
Types of operating system
System calls.
Sub. Code
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DE-3912
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wk14
10. Describe the following
Policy driven scheduling
Two level scheduling.
11. Explain the following
I/O devices
Device controllers.
12. Elucidate the device-independent I/O software and userspace
I/O software.
13. How to manage the memory with bitmaps and linked
list? Discuss.
14. Describe page replacement algorithms in detail.
15. Explain in detail about file storage and file servers.