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

Banker's algorithm deals with

Question # 2

Reference bit is used for

Question # 3

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

Question # 4

In which scheduling policies context switching never takes place

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Dijkstra's algorithm deals with

Question # 9

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

Question # 10

If two files on same partition point to the same inode structure they are called.

Question # 11

Which command is LINUX is concerned with backup.

Question # 12

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

Question # 13

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

Question # 14

All the abbreviations is vi editor can be shown by

Question # 15

Semaphores are used to solve the problem of.

Question # 16

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

Question # 17

Spooling most beneficial where

Question # 18

Problem of thrashing is affected significantly by

Question # 19

Belady anomaly occurs in

Question # 20

Printer in the file structure can be found in.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
2 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
3 Which of following is not an advantage of multiprogramming.
A. Increased through out
B. Shorter response time
C. Ability to assign priories of jobs
D. Decreased system overload
4 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
5 Printer in the file structure can be found in.
A. /etc
B. /html
C. /www
D. /dev
6 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
7 Which among following scheduling algorithms give minimum average waiting time.
A. FCFS
B. SJF
C. Round rabin
D. On priority
8 Which command in LINUX is used for description any command.
A. Help
B. Man
C. Detail
D. Short detail
9 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
10 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX

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