Jawaharlal Nehru Technological University Kakinada 2010-2nd Sem M.C.A Subject Code: MC922 [R09] Regular s OPERATING SYSTEMS - Question Paper

Time: three Hours

Max Marks: 60


ans any 5 ques. All ques. carry EQUAL marks


1. a) discuss about the different memories hierarchy.

b) elaborate the services offered by the operating system?

2. a) describe Process? discuss about Process scheduling.

b) Write the short notes on Thread Libraries

3. a)Explain about Multi-Processor Scheduling.

b) What is a critical part problem? Suggest a classic software based solution?

4. What is Deadlock? discuss methods for handling Deadlocks.

5. a) What is paging and discuss about demand paging.

b) discuss about contiguous memory allocation in the memory management

6. a) discuss about the various kinds of file access methods.

b) discuss about the file system structure.

7. a) explain about N- step- SCAN policy for disk scheduling.

b) Write a short note on RAID Structure

c) Differentiate ranging from logical I/O and device I/O.

8. a) describe Threat? discuss various kinds of Threats.

b) Compare active attacks with passive attacks.

Earning:   Approval pending.