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 command is used to record a user login session in a file.

Question # 2

By which command content of a file can be searched.

Question # 3

Disk scheduling includes decinding

Question # 4

Which among following is considered as super daemon.

Question # 5

Which among following scheduling algorithms give minimum average waiting time.

Question # 6

Which command gives the first byte where the difference is in the file 1 & file2

Question # 7

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

Question # 8

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

Question # 9

Semaphores are used to solve the problem of.

Question # 10

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

Question # 11

Multiprogramming system

Question # 12

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

Question # 13

A publics key encryption system.

Question # 14

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

Question # 15

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

Question # 16

Which command is used to determine the path of an executable file.

Question # 17

Super visor state is only allowed to.

Question # 18

Memory protection is normally done by

Question # 19

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

Question # 20

What is the command that can print lines of first file matching with second file.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
2 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
3 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
4 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
5 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
6 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above
7 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file
8 Solaris is product of.
A. IBP
B. IBM
C. Microsoft
D. Sun microsystmes
9 Which command can be used to know the present working directory.
A. pad
B. pww
C. pwd
D. pdd
10 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

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