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

Question # 2

Disk scheduling includes decinding

Question # 3

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

Question # 4

Which of the following does not interrupt an running process.

Question # 5

Memory protection is normally done by

Question # 6

Belady anomaly occurs in

Question # 7

Default permissions of file can be changed with.

Question # 8

Shortest job First executes first the job.

Question # 9

Which command is used to copy files.

Question # 10

Scissoring enables

Question # 11

Which is signal user operating system.

Question # 12

Tee command is used in LINUX for.

Question # 13

Printer in the file structure can be found in.

Question # 14

Semaphores are used to solve the problem of.

Question # 15

A publics key encryption system.

Question # 16

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

Question # 17

If two files on same partition point to the same inode structure they are called.

Question # 18

Solaris is product of.

Question # 19

Which command is concerned with LINUX kernel log messages.

Question # 20

Which command is used to know the LINUX version.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above
2 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
3 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
4 Which of the following is always there in a computer.
A. Batch system
B. Operating system
C. Time sharing system
D. Controlling system
5 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
6 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw
7 Creating a job queue is a function of
A. Spooler
B. Interpolator
C. Complier
D. Drive
8 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
9 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
10 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow

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