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

Creating a job queue is a function of

Question # 2

What is property of UNIX.

Question # 3

Which operating system use write through catches.

Question # 4

Memory protection is normally done by

Question # 5

Disk scheduling includes decinding

Question # 6

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

Question # 7

Which scheduling policy is most suitable for time shared operating system.

Question # 8

Seek analysis is for.

Question # 9

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

Question # 10

Main function of shared memory is.

Question # 11

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

Question # 12

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

Question # 13

Which one shows the name of the operating system.

Question # 14

Which command is concerned with LINUX kernel log messages.

Question # 15

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 # 16

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

Question # 17

Which of following need a device driever.

Question # 18

Which is signal user operating system.

Question # 19

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

Question # 20

Poor response times are caused by

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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.
2 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
3 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user
4 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
5 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
6 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program
7 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
8 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
9 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
10 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority

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