Operating systems concept MCQ Test 10

UGC-NET/GATE Multiple Choice Questions for Operating System.

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Question 1
When the target thread periodically checks if it should terminate and terminates itself in an orderly manner, it is called :
A
Asynchronous cancellation
B
Systematic cancellation
C
Sudden Termination
D
Deferred cancellation
Question 2
What is not a characteristic of a DFS ?
  1. Fault tolerance
  2. Scaleability
  3. Heterogeneity of the system
  4. Upgradation
A
I and III
B
II and III
C
II, III and IV
D
I,II and III
Question 3
A system has 12 magnetic tape drives and 3 processes : P0, P1, and P2. Process P0 requires 10 tape drives, P1 requires 4 and P2 requires 9 tape drives. Process P0 P1 P2 Maximum needs (process-wise : P0 through P2 top to bottom) 10 4 9 Currently allocated (process-wise) 5 2 2 Which of the following sequence is a safe sequence ?
A
P0, P1, P2
B
P1, P2, P0
C
P2, P0, P1
D
P1, P0, P2
Question 4
The technique of duplicating every disk is known as :
  1. mirroring
  2. shadowing
  3. redundancy
  4. scheduling
A
I and III
B
II and III
C
II, III and IV
D
I and II
Question 5
CPU fetches the instruction from memory according to the value of
A
program counter
B
status register
C
instruction register
D
program status word
Question 6
If the number of cycles spent busy waiting is not excessive, then :
A
interrupt driven I/O is more efficient than programmed I/O
B
programmed I/O is more efficient than interrupt driven I/O
C
Both programmed and interrupt driven I/O are equally efficient
D
none of the above
Question 7
Where performance and reliability are both important, RAID level .... is used.
A
0
B
1
C
2
D
0+1
Question 8
The powerful text editor called PC-Write can be used by anybody by paying a small fee. Such programs are called
A
Shareware
B
Firmware
C
Mindware
D
None of the above
Question 9
Round-robin scheduling
A
is quite complex to implement
B
gives each task the same chance at the processor
C
allows processor-bound tasks more time in the processor
D
None of the above
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There are 9 questions to complete.

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