DISTANCE EDUCATION
B.C.A. DEGREE EXAMINATION, MAY 2016.
PRINCIPLES OF OPERATING SYSTEM
(2003 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
All questions carry equal marks.
20 100)
1. Explain the history of operating system.
Write about various functions of an operating
system.
2. Discuss briefly about interprocess communication.

What is semaphore? Explain in detail with sample
code.
3. Write short notes on event counters.
Describe briefly about various job scheduling
techniques.
4. Explain in detail about device controller.
Discuss briefly about the usages of device drivers.

Sub. Code
13
DE-3360
2
wk 3
5. Define deadlock. Write the necessary conditions for
deadlock.
Explain the algorithms for deadlock prevention and
avoidance.
6. Express about multiprogramming without paging.

What is paging? Explain its advantages with an
example.
7. Write in detail about various page replacement
techniques with examples.
Write the difference between buddy system and
linked list system.
8. Discuss about file servers.
Describe in detail about directory structure and file
system reliability.