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 among following scheduling algorithms give minimum average waiting time.

Question # 2

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 3

Multiprogramming system

Question # 4

In real time OS, which is most suitable scheduling scheme.

Question # 5

Disk scheduling includes decinding

Question # 6

Belady anomaly occurs in.

Question # 7

Which type of software can be used to merge data of two files in one files.

Question # 8

Which command in LINUX is used for description any command.

Question # 9

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

Question # 10

Which among the following is used to write small program to control Linux Functionalities.

Question # 11

Reference bit is used for

Question # 12

Belady anomaly occurs in

Question # 13

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

Question # 14

Which of the following does not interrupt an running process.

Question # 15

Banker's algorithm deals with

Question # 16

Spooling most beneficial where

Question # 17

Daisy chain is a device for

Question # 18

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

Question # 19

File can have.

Question # 20

All the abbreviations is vi editor can be shown by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
2 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
3 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
4 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
5 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
6 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
7 A high paging rate
A. May cause a high I/O rate
B. Keeps the system running well
C. Is a symptom of too much processor activity
D. Always creates a slow system.
8 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
9 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
10 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file

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