Osmania University (OU) 2008 M.C.A Computer Aplications Operating System - Question Paper

ans 1 ques. from every unit.
All ques. carry equal marks.
Unit-I

1. a) elaborate the essential properties of the fallowing kinds of operating systems multi processor systems , real time systems
b) elaborate primary advantages to using virtual machines.
c) Briefly discuss user threads and kernnal threads.


or

2. a) a few CPUs give for more than 2 modes of operation. elaborate the 2 possible uses of these multiple modes.
b) Breifly discuss Thread cancellation and Java Threads.

Unit-II

3 a) What is the reason of thrashing? How does the system detect thrashing once it detects thrashing, what can the system do to eliminate this issue.

b) Briefly explain:

(i) File Sharing
(ii) Linked allocation of disk space.


or
4. a) With a simple example expalin the implementation of LRV page replacement algorithm

b) How can the free space in disk be mannaged ? Briefly discuss.


Unit-III


5. a) Difference ranging from semaphores & Monitors with examples.
b) What conditions hold simultaniously for deadlock to occur
c) elaborate the different schemes for implementation of Access Matrix?

or

6 a) elaborate Monitors? provide the monitors solution to diving philosophers issue.

b) What is an inverter page table?

c) elaborate the goals of protection

Earning:   Approval pending.