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

Seek analysis is for.

Question # 2

Spooling most beneficial where

Question # 3

Default permissions of file can be changed with.

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Which one shows the name of the operating system.

Question # 9

Problem of thrashing is affected significantly by

Question # 10

A publics key encryption system.

Question # 11

Which command in LINUX is used for description any command.

Question # 12

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

Question # 13

Which of following need a device driever.

Question # 14

Semaphores are used to solve the problem of.

Question # 15

File inode number can be viewed by.

Question # 16

Belady anomaly occurs in

Question # 17

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.

Question # 18

What control character signals the end of the input file.

Question # 19

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

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Default permissions of file can be changed with.
A. Group
B. Chperm
C. chmod
D. Chall
2 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
3 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
4 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
5 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
6 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin
7 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow
8 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
9 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
10 Which of following is not an advantage of multiprogramming.
A. Increased through out
B. Shorter response time
C. Ability to assign priories of jobs
D. Decreased system overload

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