MARCH/APRIL 2013 (C-09)

C-09-CM-402

3459

BOARD   DIPLOMA   EXAMINATION,   (C-09)

MARCH/APRIL 2013

D.C.M.E   -   IV SEMISTER EXAMINATION

OPERATING SYSTEMS

TIME: 3 Hours]                                                                     [Total Marks :80]

PART   - A                                          10*3=30

Instruction:  (1) answer all question and each question

                                           carries THREE marks

                    (2)  answer should be brief and   straight      to  the point and shall not exceed five simple sentences

1.   What is spooling?

Ans:   http://raj-os.blogspot.in/2012/12/what-is-spooling.html

2.  Define system call.

3.  List three overall strategies in handling deadlocks

4.  what is FCFS?

5.  List three examples of deadlocks that are not related to a computer-system environment.

6.  What are P and V operations with semaphore?

7.  How many frames are needed for each page? Why?

8.  What is the page-fault frequency strategy?

9.  Brief about disk structure.

10. List operations to be performed on directories

 PART- B                                    5*10=50

Instructions: (1) Answer any five questions and each question carries ten marks. (2) The answers should be comprehensive and the criteria for valuation is the content but not the length of the answer.

  

11. What are the services of operating system? Explain.

12. Explain the queuing diagram?

Refer to Question No (12) in Oct/Nov-2011(c-09)

http://raj-os.blogspot.in/2012/12/dcme-operating-systems-octnov-2011.html

13. Explain the process state diagram.

14. Explain the threads.

15. Write about page replacement algorithms

16. (a) write about the swapping. (b) Write about the single partition allocation

17. Compare the contiguous, linked and indexed disk space allocations.

18. Explain the differences among the file acess methods.

Refer to Question no 18 in Oct/Nov-2011(c-09)

http://raj-os.blogspot.in/2012/12/dcme-operating-systems-octnov-2011.html