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

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

Question # 2

How many links are created when we create a directory file.

Question # 3

Belady anomaly occurs in

Question # 4

By which command content of a file can be searched.

Question # 5

Which command is LINUX is concerned with backup.

Question # 6

Which of following need a device driever.

Question # 7

What control character signals the end of the input file.

Question # 8

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

Question # 9

Creating a job queue is a function of

Question # 10

Default permissions of file can be changed with.

Question # 11

Which among following scheduling algorithms give minimum average waiting time.

Question # 12

Seek analysis is for.

Question # 13

Which of the following does not interrupt an running process.

Question # 14

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

Question # 15

Which operating system use write through catches.

Question # 16

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

Question # 17

File can have.

Question # 18

Semaphores are used to solve the problem of.

Question # 19

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

Question # 20

Problem of thrashing is affected significantly by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
2 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
3 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
4 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
5 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
6 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
7 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above
8 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
9 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing
10 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev

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