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 is the meaning of SVR 4

Question # 2

Seek analysis is for.

Question # 3

In which scheduling policies context switching never takes place

Question # 4

Which of following need a device driever.

Question # 5

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

Question # 6

Banker's algorithm deals with

Question # 7

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

Question # 8

What is meaning of ILP32

Question # 9

In vi editor which command sets the number for all lines.

Question # 10

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

Question # 11

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

Question # 12

Semaphores are used to solve the problem of.

Question # 13

Which command is LINUX is concerned with backup.

Question # 14

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

Question # 15

A thread is.

Question # 16

Main function of shared memory is.

Question # 17

Re location bits used by relocating loader are a pacified by

Question # 18

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

Question # 19

A series of statements explaining how the data is to be processed is called.

Question # 20

Dijkstra's algorithm deals with

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
2 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
3 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
4 A publics key encryption system.
A. Allows only the correct sender to decode the data
B. Allows only the correct receiver to decode the data
C. Allows any one to decode the data
D. None of above
5 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw
6 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program
7 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
8 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead
9 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
10 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling

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