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 know the LINUX version.

Question # 2

Distributed systems should.

Question # 3

Which command is used to set terminal input output characteristics

Question # 4

Daisy chain is a device for

Question # 5

What is property of UNIX.

Question # 6

Which command is used to extract a column from a text file.

Question # 7

A publics key encryption system.

Question # 8

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

Question # 9

Which is non pre emptive

Question # 10

Main function of shared memory is.

Question # 11

Dirty bit is used ot show

Question # 12

Which command reads the content of another file in vi editor .

Question # 13

Which scheduling policy is best suited for time sharing operating system.

Question # 14

Which command changes a files group owner

Question # 15

By which command content of a file can be searched.

Question # 16

Which one shows the name of the operating system.

Question # 17

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

Question # 18

Which of the following is always there in a computer.

Question # 19

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

Question # 20

Poor response times are caused by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
3 Which scheduling policy is best suited for time sharing operating system.
A. Shortest job first
B. Round robin
C. First come first serve
D. Elevator
4 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
5 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
6 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
7 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
8 All device files are stored in which directory.
A. /etc
B. /dev
C. /www
D. /html
9 Scissoring enables
A. A part of data to be displayed
B. Entire data to be displayed
C. Full data display on full area of seen
D. No data display
10 Tee command is used in LINUX for.
A.
Read from an input and write to a standard output and file.
B. Read from an input
C. Write to an output
D. None of above

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