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

Dirty bit is used ot show

Question # 2

Remote computing services involves the use of.

Question # 3

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

Question # 4

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 5

Multiprogramming system

Question # 6

Which operating system reacts in the acutal time.

Question # 7

What are the global locks.

Question # 8

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

Question # 9

Which one shows the name of the operating system.

Question # 10

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

Question # 11

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

Question # 12

Super visor state is only allowed to.

Question # 13

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

Question # 14

By which command content of a file can be searched.

Question # 15

which option of 'grep' displays the line number as well.

Question # 16

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 17

Creating a job queue is a function of

Question # 18

Which command is used to copy files.

Question # 19

Which process is known for initializing a microcomputer with its OS.

Question # 20

For multiprogramming operating system.

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PPSC Class ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
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 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
4 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
5 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing
6 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
7 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
8 Problem of thrashing is affected significantly by
A. Program structure
B. Program size
C. Primary storage size
D. All of above
9 What control character signals the end of the input file.
A. Ctrl + s
B. Ctrl + z
C. Ctrl + w
D. Ctrl + d
10 A high paging rate
A. May cause a high I/O rate
B. Keeps the system running well
C. Is a symptom of too much processor activity
D. Always creates a slow system.

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