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

All device files are stored in which directory.

Question # 2

How many links are created when we create a directory file.

Question # 3

Multiprogramming system

Question # 4

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

Question # 5

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

Question # 6

Banker's algorithm deals with

Question # 7

Which command is used to copy files.

Question # 8

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

Question # 9

Re location bits used by relocating loader are a pacified by

Question # 10

What are the global locks.

Question # 11

Which among following scheduling algorithms give minimum average waiting time.

Question # 12

What is property of UNIX.

Question # 13

What control character signals the end of the input file.

Question # 14

By which command content of a file can be searched.

Question # 15

File inode number can be viewed by.

Question # 16

Which one shows the name of the operating system.

Question # 17

Problem of thrashing is affected significantly by

Question # 18

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

Question # 19

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

Question # 20

Poor response times are caused by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 A publics key encryption system.
A. Allows only the correct sender to decode the data
B. Allows only the correct receiver to decode the data
C. Allows any one to decode the data
D. None of above
2 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
3 Which type of software can be used to merge data of two files in one files.
A. System software
B. Networking software
C. Documenting software
D. utility software
4 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
5 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
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.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
7 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
8 Shortest job First executes first the job.
A. With the least processor needs
B. That first entered the queue
C. That has been in the queue for the longest
D. That last entered the queue
9 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
10 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF

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