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 of following need a device driever.

Question # 2

Dijkstra's algorithm deals with

Question # 3

By which command content of a file can be searched.

Question # 4

Fragmentation of a file system.

Question # 5

Shortest job First executes first the job.

Question # 6

What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.

Question # 7

Which is non pre emptive

Question # 8

By which of following the problem of thrashing is significantly affected.

Question # 9

Default permissions of file can be changed with.

Question # 10

Super visor state is only allowed to.

Question # 11

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

Question # 12

Which is the most important for Multi taskiing.

Question # 13

Which among following scheduling algorithms give minimum average waiting time.

Question # 14

Which among the following is used to write small program to control Linux Functionalities.

Question # 15

Which scheduling policy is most suitable for time shared operating system.

Question # 16

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

Question # 17

A series of statements explaining how the data is to be processed is called.

Question # 18

File inode number can be viewed by.

Question # 19

A publics key encryption system.

Question # 20

Which command is LINUX is concerned with backup.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
2 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
3 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
4 A thread is.
A. Lightweight process where the context switching is low
B. Lightweight process where the context switching is high
C. Used to speed up paging
D. Used in dead locks
5 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program
6 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead
7 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
8 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
9 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
10 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move

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