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 series of statements explaining how the data is to be processed is called.

Question # 2

Which is the most important for Multi taskiing.

Question # 3

Which command is used to set limits on file size.

Question # 4

Which of the following is always there in a computer.

Question # 5

Spooling most beneficial where

Question # 6

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 # 7

Reference bit is used for

Question # 8

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

Question # 9

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

Question # 10

Default permissions of file can be changed with.

Question # 11

Which operating system reacts in the acutal time.

Question # 12

Super visor state is only allowed to.

Question # 13

To display disk consumption of a specific directory which command is used.

Question # 14

What is the meaning of SVR 4

Question # 15

Remote computing services involves the use of time sharing and

Question # 16

How applications communicates with kernel.

Question # 17

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

Question # 18

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

Question # 19

Banker's algorithm deals with

Question # 20

The part of machine level instruction which tells the central processor what has to be done is.

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Sr.# Question Answer
1 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
2 Solaris is product of.
A. IBP
B. IBM
C. Microsoft
D. Sun microsystmes
3 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
4 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
5 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
6 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
7 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
8 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
9 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
10 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above

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