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

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

Question # 2

Default permissions of file can be changed with.

Question # 3

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

Question # 4

What control character signals the end of the input file.

Question # 5

Which of the following is always there in a computer.

Question # 6

Which process is known for initializing a microcomputer with its OS.

Question # 7

Which command in LINUX is used for description any command.

Question # 8

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

Question # 9

Which command is used to determine the path of an executable file.

Question # 10

Disk scheduling includes decinding

Question # 11

Semaphores are used to solve the problem of.

Question # 12

Which operating system reacts in the acutal time.

Question # 13

Distributed systems should.

Question # 14

Printer in the file structure can be found in.

Question # 15

The system calls in UNIX is written using which language.

Question # 16

Dirty bit is used ot show

Question # 17

Size of virtual memory depends on

Question # 18

Which is not a valid file type in LINUX.

Question # 19

Which command changes a files group owner

Question # 20

All the abbreviations is vi editor can be shown by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
2 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
3 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
4 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
5 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
6 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
7 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
8 Which of following is not an advantage of multiprogramming.
A. Increased through out
B. Shorter response time
C. Ability to assign priories of jobs
D. Decreased system overload
9 Which command is used to know the LINUX version.
A. Uname
B. Vname
C. Iname
D. s name
10 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX

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