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

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

Question # 2

File record length

Question # 3

Which operating system use write through catches.

Question # 4

In vi editor which command sets the number for all lines.

Question # 5

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

Question # 6

Remote computing services involves the use of.

Question # 7

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

Question # 8

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 9

Which command can be used to know the present working directory.

Question # 10

Spooling most beneficial where

Question # 11

Belady anomaly occurs in.

Question # 12

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

Question # 13

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

Question # 14

Which command is used to know the LINUX version.

Question # 15

Which of the following is always there in a computer.

Question # 16

Which command is used to set terminal input output characteristics

Question # 17

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 # 18

Which of the following does not interrupt an running process.

Question # 19

Which operating system reacts in the acutal time.

Question # 20

Which of following need a device driever.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
2 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction
3 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
4 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
5 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
6 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
7 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
8 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
9 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
10 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev

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