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 operating system reacts in the acutal time.

Question # 2

Super visor state is only allowed to.

Question # 3

Memory protection is normally done by

Question # 4

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

Question # 5

By which command content of a file can be searched.

Question # 6

The system calls in UNIX is written using which language.

Question # 7

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 8

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

Question # 9

Distributed systems should.

Question # 10

Distributed system should.

Question # 11

Printer in the file structure can be found in.

Question # 12

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

Question # 13

Belady anomaly occurs in

Question # 14

What is the command that can print lines of first file matching with second file.

Question # 15

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

Question # 16

Which one shows the name of the operating system.

Question # 17

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

Question # 18

Which command in vi editor command is used to copy the current line of the file.

Question # 19

In which scheduling policies context switching never takes place

Question # 20

Which operating system use write through catches.

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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 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
3 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
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 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
6 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
7 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
8 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
9 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
10 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev

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