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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  • Total Questions20

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PPSC Computer Science Topic 19 Operating System

00:00
Question # 1

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

Question # 2

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

Question # 3

Which of following is not an advantage of multiprogramming.

Question # 4

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

Question # 5

Daisy chain is a device for

Question # 6

Which operating system use write through catches.

Question # 7

Main function of shared memory is.

Question # 8

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

Question # 9

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

Question # 10

Which of the following is always there in a computer.

Question # 11

Which operating system reacts in the acutal time.

Question # 12

File inode number can be viewed by.

Question # 13

Which command is used to set limits on file size.

Question # 14

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

Question # 15

Default permissions of file can be changed with.

Question # 16

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

Question # 17

To display disk consumption of a specific directory which command is used.

Question # 18

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 19

Belady anomaly occurs in.

Question # 20

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Creating a job queue is a function of
A. Spooler
B. Interpolator
C. Complier
D. Drive
3 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
4 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
5 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
6 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
7 Problem of thrashing is affected significantly by
A. Program structure
B. Program size
C. Primary storage size
D. All of above
8 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
9 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
10 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program

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