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

Remote computing services involves the use of.

Question # 2

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

Question # 3

A publics key encryption system.

Question # 4

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

Question # 5

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 6

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 7

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

Question # 8

Which command is used to know the LINUX version.

Question # 9

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

Question # 10

Fragmentation of a file system.

Question # 11

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 12

File record length

Question # 13

File can have.

Question # 14

Spooling most beneficial where

Question # 15

Memory protection is normally done by

Question # 16

Which command is used to set terminal input output characteristics

Question # 17

Which among following scheduling algorithms give minimum average waiting time.

Question # 18

All device files are stored in which directory.

Question # 19

Which of the following is always there in a computer.

Question # 20

Re location bits used by relocating loader are a pacified by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
2 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev
3 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead
4 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
5 Which of the following does not interrupt an running process.
A. A device
B. Timer
C. Scheduler process
D. Power failure
6 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
7 Reference bit is used for
A. Implementing LRU page replacement algorithm
B. Implementing NRU algorithm
C. To check the page table entry in the cache memory
D. None of above
8 Super visor state is only allowed to.
A. Utility softwares
B. Application sotware
C. Operating system
D. Guest user
9 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
10 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter

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