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 control character signals the end of the input file.

Question # 2

Disk scheduling includes decinding

Question # 3

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

Question # 4

When did IBM released the first version of its disk operating system DOS version 1.0

Question # 5

Which scheduling policy is best suited for time sharing operating system.

Question # 6

Belady anomaly occurs in.

Question # 7

Which of following is not an advantage of multiprogramming.

Question # 8

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

Question # 9

Fragmentation of a file system.

Question # 10

File record length

Question # 11

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

Question # 12

Which is signal user operating system.

Question # 13

Re location bits used by relocating loader are a pacified by

Question # 14

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

Question # 15

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

Question # 16

File can have.

Question # 17

What is the command that can print lines of first file matching with second file.

Question # 18

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

Question # 19

Size of virtual memory depends on

Question # 20

Tee command is used in LINUX for.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which type of software can be used to merge data of two files in one files.
A. System software
B. Networking software
C. Documenting software
D. utility software
2 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
3 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
4 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
5 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing
6 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
7 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
8 Multiprogramming system
A. Are easier to develop than signal programming system.
B. Execute each job faster
C. Execute more jobs in the same time
D. Are used only on large main frame computers.
9 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
10 Belady anomaly occurs in.
A. LIFO
B. FIFO
C. LRU
D. NRU

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