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

By which command content of a file can be searched.

Question # 2

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

Question # 3

In which scheduling policies context switching never takes place

Question # 4

What control character signals the end of the input file.

Question # 5

By which of following the problem of thrashing is significantly affected.

Question # 6

Which operating system reacts in the acutal time.

Question # 7

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 8

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

Question # 9

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 10

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

Question # 11

File inode number can be viewed by.

Question # 12

Which operating system use write through catches.

Question # 13

Shortest job First executes first the job.

Question # 14

A high paging rate

Question # 15

Main function of shared memory is.

Question # 16

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 17

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

Question # 18

Which command is used to set limits on file size.

Question # 19

Disk scheduling includes decinding

Question # 20

Which is signal user operating system.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
2 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
3 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
4 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
5 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
6 Which scheduling policy is best suited for time sharing operating system.
A. Shortest job first
B. Round robin
C. First come first serve
D. Elevator
7 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
8 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues
9 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
10 In which scheduling policies context switching never takes place
A. FCFS
B. Round robin
C. Shortest job first
D. Pre empitive

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