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

00:00
Question # 1

Disk scheduling includes decinding

Question # 2

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

Question # 3

Which command is used to set terminal input output characteristics

Question # 4

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

Question # 5

Dirty bit is used ot show

Question # 6

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

Question # 7

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

Question # 8

How applications communicates with kernel.

Question # 9

Which is non pre emptive

Question # 10

The part of machine level instruction which tells the central processor what has to be done is.

Question # 11

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

Question # 12

What is property of UNIX.

Question # 13

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

Question # 14

Printer in the file structure can be found in.

Question # 15

Main function of shared memory is.

Question # 16

Which command changes a files group owner

Question # 17

Seek analysis is for.

Question # 18

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 # 19

Spooling most beneficial where

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
2 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
3 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
4 Problem of thrashing is affected significantly by
A. Program structure
B. Program size
C. Primary storage size
D. All of above
5 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
6 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
7 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
8 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
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 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading

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