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

Question # 2

All the abbreviations is vi editor can be shown by

Question # 3

A high paging rate

Question # 4

What is the meaning of SVR 4

Question # 5

Disk scheduling includes decinding

Question # 6

Shortest job First executes first the job.

Question # 7

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 8

In vi editor which command sets the number for all lines.

Question # 9

In which of the following usually a front end processor is used.

Question # 10

File record length

Question # 11

Which of following is not an advantage of multiprogramming.

Question # 12

Which LINUX command is used to update the modification time of a file.

Question # 13

Problem of thrashing is affected significantly by

Question # 14

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

Question # 15

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

Question # 16

Which is non pre emptive

Question # 17

Scissoring enables

Question # 18

Which of following need a device driever.

Question # 19

Size of virtual memory depends on

Question # 20

File can have.

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PPSC Class ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Super visor state is only allowed to.
A. Utility softwares
B. Application sotware
C. Operating system
D. Guest user
3 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
4 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF
5 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user
6 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
7 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
8 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
9 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
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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