Operating System

1.    Explain Belady's Anomaly.

2.    What is a binary semaphore? What is its use?

3.    List the Coffman's conditions that lead to a deadlock.

4.    What are short-, long- and medium-term scheduling?

5.    What are turnaround time and response time?

6.    What are the typical elements of a process image?

7.    What is the Translation Lookaside Buffer (TLB)?

8.    What is the resident set and working set of a process?

9.    When is a system in safe state?

10.  What is cycle stealing?

11.  What is meant by arm-stickiness?

12.  What are the stipulations of C2 level security?

13.  What is busy waiting?

14.  Explain the popular multiprocessor thread-scheduling strategies.

15.  When does the condition 'rendezvous' arise?

16.  What is a trap and trapdoor?

17.  What are local and global page replacements?

18.  Define latency, transfer and seek time with respect to disk I/O.

19.  Describe the Buddy system of memory allocation.

20.  What is time-stamping?

21.  How are the wait/signal operations for monitor different from those for semaphores?

22.  In the context of memory management, what are placement and replacement algorithms?

23.  In loading programs into memory, what is the difference between load-time dynamic linking and run-time dynamic linking?

24.  What are demand- and pre-paging?

25.  Paging a memory management function, while multiprogramming a processor management function, are the two interdependent?

26.  What is page cannibalizing?

27.  What has triggered the need for multitasking in PCs?

28.  What are the four layers that Windows NT have in order to achieve independence?

29.  What is SMP?

30.  What are the key object oriented concepts used by Windows NT?

31.  Is Windows NT a full blown object oriented operating system? Give reasons.

32.  What is a drawback of MVT?

33.  What is process spawning?

34.  How many jobs can be run concurrently on MVT?

35.  List out some reasons for process termination.

36.  What are the reasons for process suspension?

37.  What is process migration?

38.  What is mutant?

39.    What is an idle thread?

40.    What is FtDisk?

41.    What are the possible threads a thread can have?

42.    What are rings in Windows NT?

43.    What is Executive in Windows NT?

44.    What are the sub-components of I/O manager in Windows NT?

45.    What are DDks? Name an operating system that includes this feature.

46.    What level of security does Windows NT meets?

47.    Explain the concept of Reentrancy.

48.   What is thrashing?

   

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