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

Semaphores are used to solve the problem of.

Question # 2

Re location bits used by relocating loader are a pacified by

Question # 3

Which of the following does not interrupt an running process.

Question # 4

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

Question # 5

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 6

Which of following is not an advantage of multiprogramming.

Question # 7

Distributed system should.

Question # 8

Size of virtual memory depends on

Question # 9

Fragmentation of a file system.

Question # 10

The system calls in UNIX is written using which language.

Question # 11

File can have.

Question # 12

In which scheduling policies context switching never takes place

Question # 13

A publics key encryption system.

Question # 14

Which among following scheduling algorithms give minimum average waiting time.

Question # 15

Which of the following is always there in a computer.

Question # 16

Memory protection is normally done by

Question # 17

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

Question # 18

File record length

Question # 19

Shortest job First executes first the job.

Question # 20

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

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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 Which command is used to know the LINUX version.
A. Uname
B. Vname
C. Iname
D. s name
3 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
4 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
5 All device files are stored in which directory.
A. /etc
B. /dev
C. /www
D. /html
6 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
7 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
8 Which command in LINUX is used for description any command.
A. Help
B. Man
C. Detail
D. Short detail
9 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
10 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker

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