Operating systems concept MCQ Test 46

By | October 3, 2017

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

Question 1
Let the time taken to switch between user mode and kernel mode of execution be T1 while time taken to switch between two user processes be T2. Which of the following is correct?
A
T1 < T2
B
T1 > T2
C
T1 = T2
D
Nothing can be said about the relation between T1 and T2.
Question 2
A state is safe if the system can allocate resources to each process (up to its maximum) in some order and still avoid deadlock. Then
A
deadlocked state is unsafe
B
unsafe state may lead to a deadlock situation
C
deadlocked state is a subset of unsafe state
D
all of these
Question 3
Jobs are allocated CPU space for its execution by algorithm of
A
CPU bound algorithm
B
CPU assistance algorithm
C
CPU tasker algorithm
D
CPU scheduler algorithm
Question 4
File storage system is one of computer system's
A
hardware
B
operating system
C
resources
D
compilers
Question 5
The ..... is used by device controllers to request service.
A
nonmaskable interrupt
B
blocked interrupt
C
maskable interrupt
D
none of the mentioned
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There are 5 questions to complete.

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