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

00:00
Question # 1

Which operating system use write through catches.

Question # 2

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

Question # 3

What are the global locks.

Question # 4

All device files are stored in which directory.

Question # 5

A publics key encryption system.

Question # 6

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

Question # 7

Default permissions of file can be changed with.

Question # 8

A thread is.

Question # 9

What communication command provides communication to another user logged on by writing to the bottom of their terminal

Question # 10

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

Question # 11

Which command is used to copy files.

Question # 12

Which is not a valid file type in LINUX.

Question # 13

Which command is used to set limits on file size.

Question # 14

Remote computing services involves the use of.

Question # 15

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

Question # 16

Which one shows the name of the operating system.

Question # 17

Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.

Question # 18

Which command is used to know the LINUX version.

Question # 19

Which is non pre emptive

Question # 20

Daisy chain is a device for

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
2 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
3 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
4 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
5 Daisy chain is a device for
A. Connecting a number of controllers to a device
B. Connecting a number of device to a controller
C. all of above
D. None of above
6 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev
7 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
8 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
9 Which scheduling policy is best suited for time sharing operating system.
A. Shortest job first
B. Round robin
C. First come first serve
D. Elevator
10 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above

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