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

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 2

What control character signals the end of the input file.

Question # 3

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 # 4

Which command is used to record a user login session in a file.

Question # 5

How many links are created when we create a directory file.

Question # 6

Distributed systems should.

Question # 7

Belady anomaly occurs in.

Question # 8

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

Question # 9

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 10

Which process is known for initializing a microcomputer with its OS.

Question # 11

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

Question # 12

All device files are stored in which directory.

Question # 13

Banker's algorithm deals with

Question # 14

Seek analysis is for.

Question # 15

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

Question # 16

Fragmentation of a file system.

Question # 17

What is property of UNIX.

Question # 18

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

Question # 19

Which command is used to determine the path of an executable file.

Question # 20

Daisy chain is a device for

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 A publics key encryption system.
A. Allows only the correct sender to decode the data
B. Allows only the correct receiver to decode the data
C. Allows any one to decode the data
D. None of above
3 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin
4 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
5 The part of machine level instruction which tells the central processor what has to be done is.
A. Operation code
B. Address
C. Locator
D. Flip flop
6 Reference bit is used for
A. Implementing LRU page replacement algorithm
B. Implementing NRU algorithm
C. To check the page table entry in the cache memory
D. None of above
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 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
9 Which of the following does not interrupt an running process.
A. A device
B. Timer
C. Scheduler process
D. Power failure
10 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction

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