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 command is used to record a user login session in a file.

Question # 2

Which is the most important for Multi taskiing.

Question # 3

What control character signals the end of the input file.

Question # 4

Which among following is considered as super daemon.

Question # 5

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

Question # 6

What are the global locks.

Question # 7

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

Question # 8

Spooling most beneficial where

Question # 9

Which operating system reacts in the acutal time.

Question # 10

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

Question # 11

Which command gives the first byte where the difference is in the file 1 & file2

Question # 12

Which of the following is always there in a computer.

Question # 13

Which of following need a device driever.

Question # 14

Memory protection is normally done by

Question # 15

By which command content of a file can be searched.

Question # 16

Tee command is used in LINUX for.

Question # 17

Which command is used to know the LINUX version.

Question # 18

All the abbreviations is vi editor can be shown by

Question # 19

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

Question # 20

Which is signal user operating system.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Solaris is product of.
A. IBP
B. IBM
C. Microsoft
D. Sun microsystmes
2 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode
3 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
4 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
5 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
6 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
7 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
8 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
9 Size of virtual memory depends on
A. Size of data bus
B. Size of address bus
C. Size of main memory
D. None of above
10 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

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