M.C.A. DEGREE EXAMINATION, APRIL 2017
Second Semester
Computer Applications
OPERATING SYSTEMS
(2012 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
All the questions carry equal marks.
1. Define: Operating System.
2. What are the categories of system program?
3. Define: Process.
4. What is Turnaround time?
5. What is critical section?
6. What is swapping?
7. Define: Page Table.
8. List out the attributes of File.
9. What is Volume Control Block?
10. Define: NAS.
Sub. Code
541202/
545202
RW-154
2
Wk6
Part B x 5 25)
Answer all the questions, choosing either or
11. Discuss the operations of operating system.
Or
Write a note on system calls.
12. Explain the process control block.
Or
Discuss round robin scheduling.
13. Write a note on monitors in operation system.
Or
Write a note on deadlock detection.
14. Explain contiguous memory allocation.
Or
Discuss about file system mounting.
15. Write a note on free-space management.
Or
Illustrate the disk structure.
Part C x 10 30)
Answer any three questions.
All questions carry equal marks.
16. Describe the computer system architecture.
17. Explain the operations on processes.
RW-154
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Wk6
18. Write in detail about semaphores.
19. Discuss about paging in operating system.
20. Explain the various disk scheduling algorithms.
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