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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  • Total Questions20

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PPSC Computer Science Topic 19 Operating System

00:00
Question # 1

Re location bits used by relocating loader are a pacified by

Question # 2

Semaphores are used to solve the problem of.

Question # 3

Which of following is not an advantage of multiprogramming.

Question # 4

Which command gives the first byte where the difference is in the file 1 & file2

Question # 5

Which among following is considered as super daemon.

Question # 6

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 7

Which command in LINUX is used for description any command.

Question # 8

Tee command is used in LINUX for.

Question # 9

Which scheduling policy is best suited for time sharing operating system.

Question # 10

Which command can be used to know the present working directory.

Question # 11

In real time OS, which is most suitable scheduling scheme.

Question # 12

What communication command provides communication to another user logged on by writing to the bottom of their terminal

Question # 13

Which type of software can be used to merge data of two files in one files.

Question # 14

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

Question # 15

What is property of UNIX.

Question # 16

By which command content of a file can be searched.

Question # 17

Which scheduling policy is most suitable for time shared operating system.

Question # 18

Banker's algorithm deals with

Question # 19

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 20

Spooling most beneficial where

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above
2 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
3 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
4 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow
5 Which command can be used to know the present working directory.
A. pad
B. pww
C. pwd
D. pdd
6 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
7 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
8 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
9 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
10 The part of machine level instruction which tells the central processor what has to be done is.
A. Operation code
B. Address
C. Locator
D. Flip flop

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