PPSC Computer Science Topic 19 MCQ's Test Preparation

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MCQ's Test For PPSC Computer Science Topic 19 Operating System

Try The MCQ's Test For PPSC Computer Science Topic 19 Operating System

  • Total Questions20

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PPSC Computer Science Topic 19 Operating System

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Question # 1

Semaphores are used to solve the problem of.

Question # 2

Which is the most important for Multi taskiing.

Question # 3

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

Question # 4

Which command is used to record a user login session in a file.

Question # 5

All the abbreviations is vi editor can be shown by

Question # 6

A publics key encryption system.

Question # 7

Which of the following is always there in a computer.

Question # 8

Tee command is used in LINUX for.

Question # 9

Printer in the file structure can be found in.

Question # 10

Main function of shared memory is.

Question # 11

What is the name of values that are automatically provided by software to reduce keystrokes.

Question # 12

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

Question # 13

Dirty bit is used ot show

Question # 14

Re location bits used by relocating loader are a pacified by

Question # 15

Which among following scheduling algorithms give minimum average waiting time.

Question # 16

Remote computing services involves the use of time sharing and

Question # 17

Banker's algorithm deals with

Question # 18

Which one is true.

Question # 19

What is property of UNIX.

Question # 20

What are the global locks.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Multiprogramming system
A. Are easier to develop than signal programming system.
B. Execute each job faster
C. Execute more jobs in the same time
D. Are used only on large main frame computers.
2 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
3 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
4 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
5 A high paging rate
A. May cause a high I/O rate
B. Keeps the system running well
C. Is a symptom of too much processor activity
D. Always creates a slow system.
6 Problem of thrashing is affected significantly by
A. Program structure
B. Program size
C. Primary storage size
D. All of above
7 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
8 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
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 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor

Test Questions