Question # 1

Which command changes a files group owner

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chmod

chgrp

chown

chgrep

What is property of UNIX.

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Multi user

Multi processes

Multi tasking

All of above

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

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Integer

String

Float

Chracter

Which command is concerned with LINUX kernel log messages.

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dmsg

dmesg

cmsg

cmesg

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

if the CPU scheduling policy is FCFS then what would be average waiting time.

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10 ms

10.8 ms

12 ms

12.8 ms

Which command in LINUX is used for description any command.

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Help

Man

Detail

Short detail

Semaphores are used to solve the problem of.

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Race condition

Process synchronization

Mutual exclusion

Belady problem

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 among following scheduling algorithms give minimum average waiting time.

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FCFS

SJF

Round rabin

On priority

Which command is LINUX is concerned with backup.

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tar

zip

cpio

untar

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