Operating System Questions - BU Previous

File System Notes
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IV SEMESTER B.C.A EXAMINATION ,MAY 2007

OPERATING SYSTEM

TIME:3 HRS
MAX MARKS:80

SECTION-A
ANSWER ANY EIGHT OF THE FOLLOWING(MARKS:8*3=24)

1.DEFINE AN OPERATING SYSTEM .DIFFERENTIATE BETWEEN ON-LINE AND OFF-LINE OPERATIONS
2.EXPLAIN ANY THREE SERVICES PROVIDED BY THE OPERATING SYSTEM
3.WHAT IS PCB?EXPLAIN BRIEFLY
4.EXPLAIN THE DIFFERENT PROCESS SCHEDULERS
5.BRIEFLY EXPLAIN DEADLOCK RECOVERY
6.WHAT IS CONTEXT SWITCHING?
7.WHAT IS SEGMENTATION?EXPLAIN
8.EXPLAIN LINKED ALLOCATION METHOD FOR FILES
10.GIVE ANY THREE FEATURES OF UNIX OPERATING SYSTEM

SECTION-B
ANSWER NY FOUR OF THE FOLLOWING(4*14=56)
11.a)EXPLAIN DISTRIBUTED OPERATING SYSTEM ALONG WITH ITS ADVANTAGES
b)EXPLAIN SYSTEM CALLS

12a)EXPLAIN READER-WRITER PROBLEM
b)DISCUSS ANY TWO METHODS OF DEADLOCK PREVENTION

13a)EXPLAIN ANY 4 PROCESS SCHEDULING CRITERIA
b)EXPLAIN ROUND ROBIN SCHEDULING ALGORITHM WITH EXAMPLE

14.a)EXPLAIN DEMAND PAGING WITH ILLUSTRATIVE EXAMPLE
b)EXPLAIN FIFO PAGE REPLACEMENT ALGORITHM WITH AN EXAMPLE

15a)DISCUSS ANY TWO DISK SCHEDULING ALGORITHMS
b)EXPLAIN ANY ONE DIRECTORY STRUCTURE

16 WRITE SHORT NOTES ON
a)FREE SPACE MANAGEMENT
b)SEMAPHORES
c)COMPACTION

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Bachelor of Computer Application (BCA), NOV - 2009

Operating Systems


1. ____________ contains the most frequently used functions in operating system.
a. Monitor   b. Sceduling   c. Nucleus   d. None of the above 

 
2. The function of 'Ref' in Linux is ____________.
a. Pointer to this modules symbol table
b. List of modules that use this module
c. Starting address of module
d. Current state of module 

3. ____________ character is used to access any file on the disk.
A. Back slash
b. Forward slash
c. $
d. Double slash 

4. In modern operating system, ____________ is used to restore file system incase of disk crashes and system failure.
a. MVS
b. FAT
c. NTFS
d. None of the above 

5. The number of process running simultaneously and competing for the CPU is known as ____________ of multiprogramming.
a. Ratio
b. Depth
c. Degree
d. None of the above 

6. After termination, the operating system is put to - state for a while before removing all its detail from memory.
a. New
b. Halt
c. Blocked
d. Ready 

7. ____________ fit reduces search time considerably.
a. First
b. Best
c. Quick
d. None of the above 

8. A page modified in main memory is called as ____________ page.
a. Modified
b. Dirty
c. Changed
d. Altered 

9. In ____________, a secondary server takes over in case of primary server failure.
a. Server shared disk
b. Server connected to disk
c. Passive stand by
d. Active stand by 

10. Caching is used in ____________ clusters.
a. Beowulf
b. Windows 2000
c. Sun
d. None of the above 
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11. a. Describe the services of operating system in detail.

Or

b. Write a note on client/server model. 

12. a. Explain about the Booting concept.

Or

b. Describe the usage of device driver. 

13. a. What is context switching? Explain.

Or

b. Describe the different process states of operating system. 

14. a. State the usage of variable partition.

Or

b. Explain the working of compaction. 

15. a. Categorize the different classes of client/server applications.

Or

b. Explain the concept of W2K cluster server design. 

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16. a. Elucidate the working of Time sharing system with example.

Or

b. Sketch the architecture of UNIX in detail. 

17. a. Give the structure of operating system with a neat diagram.

Or

b. Discuss about
i. File mounting and
ii. Disk formatting 

18. a. What is a process? Explain.

Or

b. Comment on process state transition. 

19. a. Explain the concept of paging. Use any one method and explain how PMT's implemented.

Or

b. Discuss any 5 page replacement policies with example. 

20. a. Describe the concept of Remote procedure call.

Or

b. Discuss about clusters. 

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