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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  • Total Questions20

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PPSC Computer Science Topic 19 Operating System

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Question # 1

Which is not a valid file type in LINUX.

Question # 2

File can have.

Question # 3

Semaphores are used to solve the problem of.

Question # 4

Which among following is considered as super daemon.

Question # 5

Which LINUX command is used to update the modification time of a file.

Question # 6

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

Question # 7

Main function of shared memory is.

Question # 8

Banker's algorithm deals with

Question # 9

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

Question # 10

Dirty bit is used ot show

Question # 11

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

Question # 12

Default permissions of file can be changed with.

Question # 13

By which command content of a file can be searched.

Question # 14

Which command is used to know the LINUX version.

Question # 15

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

Question # 16

What is property of UNIX.

Question # 17

Which of following need a device driever.

Question # 18

What is the meaning of SVR 4

Question # 19

To display disk consumption of a specific directory which command is used.

Question # 20

Distributed system should.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
2 Remote computing services involves the use of time sharing and
A. Multiprocessing
B. Interactive processing
C. Batch processing
D. Real time processing
3 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
4 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
5 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
6 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
7 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
8 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
9 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues
10 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker

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