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 is true.

Question # 2

For multiprogramming operating system.

Question # 3

What control character signals the end of the input file.

Question # 4

Super visor state is only allowed to.

Question # 5

Which command changes a files group owner

Question # 6

Which one shows the name of the operating system.

Question # 7

Banker's algorithm deals with

Question # 8

Which among following is considered as super daemon.

Question # 9

Poor response times are caused by

Question # 10

Belady anomaly occurs in.

Question # 11

Which command in vi editor command is used to copy the current line of the file.

Question # 12

Distributed system should.

Question # 13

All the abbreviations is vi editor can be shown by

Question # 14

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

Question # 15

Which of the following does not interrupt an running process.

Question # 16

Which of following is not an advantage of multiprogramming.

Question # 17

How applications communicates with kernel.

Question # 18

Which command is used to set terminal input output characteristics

Question # 19

Problem of thrashing is affected significantly by

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
2 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
3 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
4 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
5 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
6 Daisy chain is a device for
A. Connecting a number of controllers to a device
B. Connecting a number of device to a controller
C. all of above
D. None of above
7 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
8 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
9 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
10 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

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