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

Default permissions of file can be changed with.

Question # 2

Which among following scheduling algorithms give minimum average waiting time.

Question # 3

Banker's algorithm deals with

Question # 4

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

Question # 5

Super visor state is only allowed to.

Question # 6

Which command in LINUX is used for description any command.

Question # 7

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

Question # 8

Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.

Question # 9

When did IBM released the first version of its disk operating system DOS version 1.0

Question # 10

Remote computing services involves the use of time sharing and

Question # 11

Printer in the file structure can be found in.

Question # 12

Which command changes a files group owner

Question # 13

In real time OS, which is most suitable scheduling scheme.

Question # 14

Which one shows the name of the operating system.

Question # 15

How applications communicates with kernel.

Question # 16

Tee command is used in LINUX for.

Question # 17

What is the command that can print lines of first file matching with second file.

Question # 18

Distributed systems should.

Question # 19

Semaphores are used to solve the problem of.

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
4 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user
5 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
6 Remote computing services involves the use of time sharing and
A. Multiprocessing
B. Interactive processing
C. Batch processing
D. Real time processing
7 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
8 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
9 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
10 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

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