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

00:00
Question # 1

Which command in vi editor command is used to copy the current line of the file.

Question # 2

Which of the following is always there in a computer.

Question # 3

Which command is used to set limits on file size.

Question # 4

Which command is used to know the LINUX version.

Question # 5

Spooling most beneficial where

Question # 6

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

Question # 7

Which of the following does not interrupt an running process.

Question # 8

Which operating system use write through catches.

Question # 9

What is the meaning of SVR 4

Question # 10

Scissoring enables

Question # 11

What is the name of values that are automatically provided by software to reduce keystrokes.

Question # 12

Daisy chain is a device for

Question # 13

For multiprogramming operating system.

Question # 14

Which command changes a files group owner

Question # 15

Dirty bit is used ot show

Question # 16

Which operating system reacts in the acutal time.

Question # 17

In which scheduling policies context switching never takes place

Question # 18

Memory protection is normally done by

Question # 19

Macintosh computer uses

Question # 20

How applications communicates with kernel.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
2 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
3 If two files on same partition point to the same inode structure they are called.
A. Soft links
B. Hard links
C. Copy links
D. similar links
4 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
5 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
6 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
7 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing
8 Creating a job queue is a function of
A. Spooler
B. Interpolator
C. Complier
D. Drive
9 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
10 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read

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