Question # 1

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

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Integer

String

Float

Chracter

Banker's algorithm deals with

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Dead lock prevention

Dead lock avoidance

Dead look recovery

Mutual exclusion

A thread is.

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Lightweight process where the context switching is low

Lightweight process where the context switching is high

Used to speed up paging

Used in dead locks

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

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1

2

3

4

Belady anomaly occurs in

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Optimal replacement

FIFO

LRU

Both in FIFO and LRU

How applications communicates with kernel.

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Not disclosed by linux team

SSL

System calls

Shell

Creating a job queue is a function of

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Spooler

Interpolator

Complier

Drive

Which is the most important for Multi taskiing.

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Modularity

Time sharing

Multi programming

Multi user

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

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pad

pww

pwd

pdd

Spooling most beneficial where

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Jobs are I/O bound

Jobs are CPU bound

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

All of above

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

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Cold booting

Boot recording

Booting

Warm booting

Which command changes a files group owner

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chmod

chgrp

chown

chgrep

By which command content of a file can be searched.

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grep

search

srh

show

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

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Defined values

Fixed values

Default values

None of the above

Which is signal user operating system.

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MS-DOS

UNIX

XENIX

LINUX

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

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which

whom

locate

wex

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

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Mutual exclusion

Race condition

Buffer overflow

None of above

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

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Instruction

Compiler

Program

Interpretor

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

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Printline

cmp

com

comn

What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.

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One

Two

Three

Four

In which scheduling policies context switching never takes place

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FCFS

Round robin

Shortest job first

Pre empitive

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