PPSC Computer Science Topic 19 MCQ's Test Preparation

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MCQ's Test For PPSC Computer Science Topic 19 Operating System

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PPSC Computer Science Topic 19 Operating System

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Question # 1

What is meaning of ILP32

Question # 2

Which command in LINUX is used for description any command.

Question # 3

Spooling most beneficial where

Question # 4

Belady anomaly occurs in.

Question # 5

Distributed systems should.

Question # 6

What is the command that can print lines of first file matching with second file.

Question # 7

All device files are stored in which directory.

Question # 8

A series of statements explaining how the data is to be processed is called.

Question # 9

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 10

Default permissions of file can be changed with.

Question # 11

Memory protection is normally done by

Question # 12

Dijkstra's algorithm deals with

Question # 13

Which operating system use write through catches.

Question # 14

Which command is used to record a user login session in a file.

Question # 15

which option of 'grep' displays the line number as well.

Question # 16

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 17

Disk scheduling includes decinding

Question # 18

A publics key encryption system.

Question # 19

Which is signal user operating system.

Question # 20

Re location bits used by relocating loader are a pacified by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In which scheduling policies context switching never takes place
A. FCFS
B. Round robin
C. Shortest job first
D. Pre empitive
2 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
3 Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
4 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
5 Shortest job First executes first the job.
A. With the least processor needs
B. That first entered the queue
C. That has been in the queue for the longest
D. That last entered the queue
6 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
7 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
8 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user
9 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
10 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem

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