Operating systems concept MCQ Test 20

By | October 3, 2017

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

Question 1
The undo and redo operations must be ..... to guarantee correct behaviour, even if a failure occurs during recovery process.
A
idempotent
B
easy
C
protected
D
all of the mentioned
Question 2
While working with mail command, which command is used to save mail in a separate file?
A
s
B
r
C
w
D
d
Question 3
The capacity of a memory unit = (the number of words) * (the number of bits / words). What will be the number of separate address and data lines needed for a memory of 4k * 16 ?
A
12 address and 16 data lines
B
12 address and 12 data lines
C
11 address and 6 data lines
D
12 address and 8 data lines
Question 4
Which of the following algorithms tends to minimize the process flow time ?
A
First come First served
B
Shortest Job First
C
Earliest Deadline First
D
Longest Job First
Question 5
While working with MS-DOS, which command is used to display the contents of a file and pause the display after each screenful of information?
A
TYPE filename | MORE
B
CAT filename | MORE
C
CAT filename | pg
D
MORE filename
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There are 5 questions to complete.

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