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

Which command is used to copy files.

Question # 2

Which command reads the content of another file in vi editor .

Question # 3

Which command is used to set terminal input output characteristics

Question # 4

How many links are created when we create a directory file.

Question # 5

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

Question # 6

Which is non pre emptive

Question # 7

Main function of shared memory is.

Question # 8

What is meaning of ILP32

Question # 9

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

Question # 10

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 11

Which among following is considered as super daemon.

Question # 12

Which operating system use write through catches.

Question # 13

Distributed system should.

Question # 14

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

Question # 15

A publics key encryption system.

Question # 16

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

Question # 17

Which command is LINUX is concerned with backup.

Question # 18

Multiprogramming system

Question # 19

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 20

Belady anomaly occurs in

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
2 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
3 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
4 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow
5 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
6 A thread is.
A. Lightweight process where the context switching is low
B. Lightweight process where the context switching is high
C. Used to speed up paging
D. Used in dead locks
7 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
8 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above
9 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
10 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter

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