10 MCQ of Operating System Paper-2(CS/IT) For NIC|SSC Scientific Assistant|IBPS IT Officer Exam 2017

image_pdfimage_print

1)Which of the following involves context switch?
a)System Call
b)Privileged Instruction
c)Both A and B
d)None of these

2)Starvation can be avoided by
a)Page Replacement
b)Aging
c)Paging
d)Framing

3)FCFS(First Come First Serve) scheduling can’t be used in
a)Desktop System
b)Time Sharing System
c)Batch System
d)Local System

4)Which of the following may block running process?
a)Fork
b)Read
c)Down
d)All of these

5)FCFS algorithm is
a)Non preemptive
b)Preemptive
c)An algorithm which has fair share
d)None of these

6)The dispatcher is
a)The module that gives control of the cpu to the process selected by scheduler
b)A module that interrupts a process
c)A module that terminates a process
d)A module that force a process to move to ready queue

7)Increasing in time slice in a Round Robin Scheduling the average turn around time will
a)Decrease
b)Increase
c)Remain Unchanged
d)Varies

8)In priority inversion
a)low priority process waits for high priority process to finish
b)high priority process waits for low priority process to finish
c)Both a and b
d)None of these

9)In multiprogramming which of the following is true?
a)Processor utilization is increased
b)More than one process can be executed
c)Response time of a process is shortened
d)All of these

10)Unix thread supports
a)One to one model
b)Many to one model
c)One to many model
d)Many to Many model

 

Answers:
1)a
2)b
3)b
4)d
5)a
6)a
7)d
8)b
9)d
10)d