MOS Question Bank

MODERN OPRATING SYSTEMS Q BANK

SECTION A

1.      List the function of operating system?

2.     What you mean by resource from the operating system point of view?

3.     Define Thread.

4.      Explain Different classes of user spaces & memory space?

5.     Define process kernel?

6.     What is DMA?

7.     List all the factors affected the operating system design?

8.    What is the usage of device drivers?

9.     What is interrupt – driven I/O?

10.List all the non-pre-emptive scheduling strategies?

11.  List the advantage of shared memory multiprocessor?

12. What do you mean by pre-emptable resource?

13. What is semaphore?

14. Define address translation in memory management?

15. Define paging?

16. Define deadlock?

17. Define mapping?

18.Compare low level file with structured file?

19. Define the Andrew file system?

20.           Define the LOCUS file system?

21. What you mean by memory – mapped file?

22.            What is meant by kernel in UNIX operating system?

23.            What do you mean by differentiate between an abstract resort and physical resource? Give to two examples of each.

24.            List different classes of processor models?

25.            Mention the role of a device driver?

26.            What do you mean by pre-emptive scheduling?

27.Explain the concept of semaphores?

28.           What is meant by monitors?

29.            What do you mean by indexed sequential file?

30.           Mention the basic functions of a memory manager?

31.    DES encryption algorithm?

32.            Define the terms authentication and authorization?

SECTION B

1. Explain how you can create a process?

2. Write a note on coordinating process?

3. Explain about explicitly ordering event execution?

4. Explain the dynamic address relocation with runtime bound checking?

5. Explain the concept of segmentation in virtual memory?

6. What is thread? Explain its advantage.

7. Explain time sharing system and real time system?

8. Explain about batch system?

9. Discuss about serial communication?

10. Explain about the resource abstraction?

11. Discuss about the processor modes and kernels?

12. Discuss about Buffering?

13. Explain the strategy selection in scheduling?

14. Explain about shared memory multiprocessor?

15. Write note on static paging algorithm?

16. Discuss the dynamic paging algorithm and compare with static algorithm?

17. Discuss about memory mapped files?

18. Explain about user authentication and authentication in networks?

19. Write short notes on

                                    (a). Device directory

                                    (b). File directory

20. Explain the concept of file – level caching?

21. Discuss about buffering & Explain various buffering techniques?

22. Explain about the communication devices their types and strategies?

23. Explain about inter process communication?

24.       Following represents a single processor with FCFS scheduling:

Process	0	1	2	3	4
T(P i)	350	152	547	50	75

             Calculate

(a)  average  Turn around time

(b)  average Waiting a time

(c)   Gantt chart to illustrate execution process

(d)  Compare the performance measures with SJN.

25. Explain the dynamic address relocation with runtime bound checking?

26. Explain the concept of segmentation in virtual memory?

27. Explain the file systems used in modern computer systems?

SECTION C

1. Explain the device management approaches?

2. Discuss the process hierarchy in process management?

3. Discuss all the preemptive strategies of scheduling?

4. Explain the concept of monitors?

5. Discuss about the deadlock detection and recovery?

6. Explain how the address translation is done by paging?

7. Discuss about the deadlock prevention and avoidance?

8. Discuss all the memory manager strategies?

9. Discuss all the Non preemptive strategies of scheduling?

10. Explain the concept of semaphore?

11. What is directory? Explain its structure and implementation?

12. Discuss about remote disk systems and remote file system?

13. Discuss how the low level file is managed by operating system?

14. Write note on internal access authorization?

15. How the operating system treats an entity as a resource? Explain any one

       resource?

16. Discuss the strategies of operating system?

17. Discuss about the structure of operating system?

18. Explain the role of threads in programming by giving suitable example?

19. Explain the operating system organization with its basic functions?

20. Discuss about the device drivers in device management?

21. Discuss in detail about various modern operating systems and their strategies?

22. What do you mean by process and thread? Explain their semantics of classic

       process, behavior of various functions in detail?

23. What do you mean by critical sections and deadlock? Explain.

24. Explain deadlock and its addressing strategies in detail?

25. Explain the methods of implementing static and dynamic paging algorithms?

26. Discuss about the detection and recovery strategy of a resourced manager?

27. Discuss about the memory allocation schemes in detail?

28. Write a brief note on Information structure and explain them with respect to

       modern operating system context (UNIX, Windows and IBM MVS)?