Question # 1

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

Choose an answer

Integer

String

Float

Chracter

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

Choose an answer

Partitioning

Multitasking

Windowing

Paging

Which operating system reacts in the acutal time.

Choose an answer

Batch system

Quick response system

Real time system

Time sharing system

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

Choose an answer

script

Record

Copy

Session

Which of following need a device driever.

Choose an answer

Cache

Disk

Main memory

Registers

What are the global locks.

Choose an answer

They synchronize access to local resources.

They synchronize access to global resources

They synchronize access to local and global resources

None of above

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

Choose an answer

System software

Networking software

Documenting software

utility software

Which command is concerned with LINUX kernel log messages.

Choose an answer

dmsg

dmesg

cmsg

cmesg

Spooling most beneficial where

Choose an answer

Jobs are I/O bound

Jobs are CPU bound

Jobs are evenly divided as I/O bound are CPU bond

All of above

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

Choose an answer

Chat

Talk

Write

Sending

Which one shows the name of the operating system.

Choose an answer

U name -n

Uname -I

U name - m

U name -o

What is property of UNIX.

Choose an answer

Multi user

Multi processes

Multi tasking

All of above

All device files are stored in which directory.

Choose an answer

/etc

/dev

/www

/html

The system calls in UNIX is written using which language.

Choose an answer

Java

C

C++

Assembly

Which operating system use write through catches.

Choose an answer

UNIX

XENIX

ULTRIX

DOS

Dijkstra's algorithm deals with

Choose an answer

Mutual exclusion

Dead lock avoidance

Dead lock recovery

Real time processing

To display disk consumption of a specific directory which command is used.

Choose an answer

dd

du

dt

di

File can have.

Choose an answer

Read access

Write access

Copy access

All of above

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

Choose an answer

Round robin

FCFS

Pre-emptive scheduling

Random scheduling

Banker's algorithm deals with

Choose an answer

Dead lock prevention

Dead lock avoidance

Dead look recovery

Mutual exclusion

Which command can be used to know the present working directory.

Choose an answer

pad

pww

pwd

pdd

More Classes

Other Links

PPSC Computer Science Chapter 19 Operating System Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer