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

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

Question # 2

A thread is.

Question # 3

Default permissions of file can be changed with.

Question # 4

What control character signals the end of the input file.

Question # 5

Which one shows the name of the operating system.

Question # 6

A publics key encryption system.

Question # 7

What is the meaning of SVR 4

Question # 8

Which command in LINUX is used for description any command.

Question # 9

Which command is LINUX is concerned with backup.

Question # 10

Printer in the file structure can be found in.

Question # 11

Shortest job First executes first the job.

Question # 12

Which is the most important for Multi taskiing.

Question # 13

Poor response times are caused by

Question # 14

Which of following is not an advantage of multiprogramming.

Question # 15

Which of the following is always there in a computer.

Question # 16

For multiprogramming operating system.

Question # 17

By which of following the problem of thrashing is significantly affected.

Question # 18

The part of machine level instruction which tells the central processor what has to be done is.

Question # 19

All the abbreviations is vi editor can be shown by

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction
2 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
3 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
4 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
5 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
6 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
7 Scissoring enables
A. A part of data to be displayed
B. Entire data to be displayed
C. Full data display on full area of seen
D. No data display
8 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
9 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
10 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow

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