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 scheduling policy is most suitable for time shared operating system.

Question # 2

Multiprogramming system

Question # 3

Which operating system use write through catches.

Question # 4

Poor response times are caused by

Question # 5

Which one is true.

Question # 6

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

Question # 7

What is property of UNIX.

Question # 8

Which command reads the content of another file in vi editor .

Question # 9

Which process is known for initializing a microcomputer with its OS.

Question # 10

Dirty bit is used ot show

Question # 11

File record length

Question # 12

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

Question # 13

The part of machine level instruction which tells the central processor what has to be done is.

Question # 14

Creating a job queue is a function of

Question # 15

What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.

Question # 16

which option of 'grep' displays the line number as well.

Question # 17

Semaphores are used to solve the problem of.

Question # 18

Which one shows the name of the operating system.

Question # 19

Which command is used to determine the path of an executable file.

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What control character signals the end of the input file.
A. Ctrl + s
B. Ctrl + z
C. Ctrl + w
D. Ctrl + d
2 Which of the following is always there in a computer.
A. Batch system
B. Operating system
C. Time sharing system
D. Controlling system
3 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read
4 Default permissions of file can be changed with.
A. Group
B. Chperm
C. chmod
D. Chall
5 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
6 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
7 A series of statements explaining how the data is to be processed is called.
A. Instruction
B. Compiler
C. Program
D. Interpretor
8 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
9 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
10 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion

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