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 scheduling policy is best suited for time sharing operating system.

Question # 2

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

Question # 3

In which of the following usually a front end processor is used.

Question # 4

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

Question # 5

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

Question # 6

Belady anomaly occurs in.

Question # 7

Disk scheduling includes decinding

Question # 8

Which command is used to know the LINUX version.

Question # 9

A publics key encryption system.

Question # 10

Seek analysis is for.

Question # 11

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 12

All the abbreviations is vi editor can be shown by

Question # 13

Which of the following does not interrupt an running process.

Question # 14

Dirty bit is used ot show

Question # 15

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

Question # 16

Which is non pre emptive

Question # 17

Which command is used to set limits on file size.

Question # 18

Super visor state is only allowed to.

Question # 19

Creating a job queue is a function of

Question # 20

If two files on same partition point to the same inode structure they are called.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
2 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
3 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
4 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above
5 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
6 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
7 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
8 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw
9 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues
10 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

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