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 one shows the name of the operating system.

Question # 2

For multiprogramming operating system.

Question # 3

Daisy chain is a device for

Question # 4

File record length

Question # 5

In the shell , by default all variables are considered and stored as.

Question # 6

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

Question # 7

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

Question # 8

Which among following scheduling algorithms give minimum average waiting time.

Question # 9

All the abbreviations is vi editor can be shown by

Question # 10

Poor response times are caused by

Question # 11

Which one is true.

Question # 12

Which of the following does not interrupt an running process.

Question # 13

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

Question # 14

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

Question # 15

Which scheduling policy is best suited for time sharing operating system.

Question # 16

Super visor state is only allowed to.

Question # 17

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

Question # 18

What control character signals the end of the input file.

Question # 19

Which command in LINUX is used for description any command.

Question # 20

Which command is LINUX is concerned with backup.

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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 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
3 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
4 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file
5 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
6 A publics key encryption system.
A. Allows only the correct sender to decode the data
B. Allows only the correct receiver to decode the data
C. Allows any one to decode the data
D. None of above
7 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
8 Which command in LINUX is used for description any command.
A. Help
B. Man
C. Detail
D. Short detail
9 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
10 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion

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