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

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

Question # 2

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 3

For multiprogramming operating system.

Question # 4

Daisy chain is a device for

Question # 5

Default permissions of file can be changed with.

Question # 6

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

Question # 7

Which command changes a files group owner

Question # 8

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

Question # 9

What is meaning of ILP32

Question # 10

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

Question # 11

Size of virtual memory depends on

Question # 12

Remote computing services involves the use of.

Question # 13

Which command in LINUX is used for description any command.

Question # 14

Which of the following does not interrupt an running process.

Question # 15

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

Question # 16

Which command is LINUX is concerned with backup.

Question # 17

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

Question # 18

Which command is concerned with LINUX kernel log messages.

Question # 19

Which command is used to know the LINUX version.

Question # 20

Re location bits used by relocating loader are a pacified by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
2 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
3 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
4 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program
5 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
6 Tee command is used in LINUX for.
A.
Read from an input and write to a standard output and file.
B. Read from an input
C. Write to an output
D. None of above
7 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
8 Four necessary conditions for dead lock are none pre emption circular wait and
A. Mutual exclusion
B. Race condition
C. Buffer overflow
D. None of above
9 Scissoring enables
A. A part of data to be displayed
B. Entire data to be displayed
C. Full data display on full area of seen
D. No data display
10 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user

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