DISTANCE EDUCATION
P.G.D.C.A. EXAMINATION, DECEMBER 2017.
First Semester
OPERATING SYSTEM
(2011 Calendar Year onwards)
Time Three hours Maximum 100 marks
PART A — x 8 40 marks)
Answer any FIVE questions in about 200 words each.
1. Explain about Operating System Structure.
2. Explain briefly about virtual machines.
3. Write notes on Multiple Queues.
4. List out the goals of I/O Software.
5. Discuss about Deadlock Avoidance.
6. Explain briefly about memory mapped I/O.
7. Explain about Memory management with Bit-maps.
8. Write notes on Disk Space Management.
PART B — × 15 60 marks)
Answer any FOUR questions.
9. Explain in detail about Operating System concepts.
10. Explain briefly about Mutual exclusion and Message
Passing.
Sub. Code
14
DE-2332
WSS
2
11. Explain Critical Section Problem.
12. Explain any three scheduling algorithms with example.
13. Explain about Page Replacement Algorithm with
example.
14. Explain in detail about Paging techniques.
15. Explain file storage and directory structure in detail.
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