DISTANCE EDUCATION
M.C.A./M.C.A. (Lateral) DEGREE EXAMINATION,
DECEMBER 2017.
Third Semester
OPERATING SYSTEMS
(2005 to 2010 Calendar year)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
All questions carry equal marks.
× 20 100)
1. Write notes on the following operating systems:
Mainframe systems.
Multiprocessor systems.
Distributed systems.
2. Explain the various operating system services with
system structure and programs.
3. Give a note on critical section problem.
Write about event counters and monitors.
4. How does deadlock occurrence is detected and prevented?
Explain with suitable illustration.
5. Elucidate the concept of deadlock characterization.

Narrate the paging technique with its hardware
implementation procedure.
Sub. Code
32
DE-2751
2
Ws6
6. Discuss the process of managing memory with
linked list and buddy system.
Elaborate the segmentation technique that is used
for memory management.
7. Write notes on the following page replacement
techniques:
FIFO page replacement.
LRU approximation page replacement.
8. Explain the following related to file management system:
File storage.
File system reliability.
File system performance.
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