Operating systems concept MCQ Test 36

By | October 3, 2017
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UGC-NET/GATE Multiple Choice Questions for Operating System.

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Question 1
Consider the following heap : JOB1-50 FREE-150 JOB2-300 FREE-350 JOB3-600 The sequence of requests for blocks of sizes 300, 25, 125, 50 can be satisfied if we use
A
either first fit or best fit policy
B
first fit, but not best fit
C
best fit, but not first fit
D
none of these
Question 2
How do viruses avoid basic pattern matchof antivirus ?
A
They are encrypted
B
They act with special permissions
C
They modify themselves
D
none of the above
Question 3
RAID level ........ refers to disk arrays with striping at the level of blocks, but without any redundancy.
A
0
B
1
C
2
D
3
Question 4
Seeks analysis
A
is used for analyzing device busy problems
B
is used for analyzing control-unit busy problems
C
is only shown on real-time displays
D
None of the above
Question 5
What scheduling algorithm allows processes that are logical runnable to be temporarily suspended?
A
preemptive scheduling
B
FIFO
C
FCFS
D
None of the above
Question 6
A translator is best described as
A
a system software
B
a hardware component
C
all of the above
D
None of the above
Question 7
Which one of the following is not true?
A
kernel is the program that constitutes the central core of the operating system
B
kernel is the first part of operating system to load into memory during booting
C
kernel is made of various modules which can not be loaded in running operating system
D
kernel remains in the memory during the entire computer session
Question 8
RAID level ..... is also known as block interleaved parity organisation and uses block level striping and keeps a parity block on a seperate disk.
A
1
B
2
C
3
D
4
Question 9
The page table registers should be built with ........
A
very low speed logic
B
very high speed logic
C
a large memory space
D
none of the above
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