Jawaharlal Nehru Technological University Kakinada 2010-3rd Year B.Tech Computer Science and Engineering Operating systems ii semester regular / - Question Paper

CODE NO: V3222/RO7 SETNO:2

IIIRD B.TECH II SEMESTER REGULAR EXAMINATIONS, APR/MAY 2010

OPERATING SYSTEMS

COMPUTER SCIENCE AND ENGINEERING


TIME 3HOURS MAX MARKS 80

ans ANY 5 ques.

1. (A) explain operating system from user point of view and system view
(b) compare the computer systems based on the number of processors

2. (a) elaborate the various kinds of scheduling queues?What are the various kinds of schedulers?
(b) what is the difference ranging from Preemptive and non-preemptive scheduling?
(c) elaborate the criteria for evaluating scheduling algorithms? Evaluate any 1 scheduling algorithm using those criteria?


3. What is the difference binary and counting semaphore. provide a solution for bounded buffer problem?

4. (a) What is dynamic linking? what is its use?
(b) What is need for swapping?
(c) elaborate various kinds of fragmentation and elaborate the solutions for it.

5. What is Safe state? Write the banker's algorithm and discuss with the help of an example.

6. (a) How locks are used in the situation of files.
(b) Compare sequential and direct access methods

7. elaborate various kinds of disc scheduling algorithms.

8. elaborate the various schemes for protection?

Earning:   Approval pending.