Question # 1

Which one shows the name of the operating system.

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U name -n

Uname -I

U name - m

U name -o

The part of machine level instruction which tells the central processor what has to be done is.

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Operation code

Address

Locator

Flip flop

What control character signals the end of the input file.

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Ctrl + s

Ctrl + z

Ctrl + w

Ctrl + d

Banker's algorithm deals with

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Dead lock prevention

Dead lock avoidance

Dead look recovery

Mutual exclusion

Which among the following is used to write small program to control Linux Functionalities.

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Shell commands

Shell script

C

Java

Tee command is used in LINUX for.

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Read from an input and write to a standard output and file.

Read from an input

Write to an output

None of above

What is property of UNIX.

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Multi user

Multi processes

Multi tasking

All of above

Poor response times are caused by

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Busy processor

High I/O rate

High paging rates

any of above

Which scheduling policy is best suited for time sharing operating system.

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Shortest job first

Round robin

First come first serve

Elevator

Which is the most important for Multi taskiing.

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Modularity

Time sharing

Multi programming

Multi user

Daisy chain is a device for

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Connecting a number of controllers to a device

Connecting a number of device to a controller

all of above

None of above

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

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UPDATE

MODIFY

TOUCH

UNTOCUH

Which scheduling policy is most suitable for time shared operating system.

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Shortest job first

FCFS

LCFS

Round robin

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

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System software

Networking software

Documenting software

utility software

Which of the following memory allocation scheme is subject to external fragmentation.

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Segmentation

Swapping

Demand paging

Multiple contiguous fixed partitions

A publics key encryption system.

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Allows only the correct sender to decode the data

Allows only the correct receiver to decode the data

Allows any one to decode the data

None of above

Which of following need a device driever.

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Cache

Disk

Main memory

Registers

Fragmentation of a file system.

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Occurs only is file is not used properly

Can always the prevented

Happens in all file systems.

Can be removed by conmpaction

Which command is concerned with LINUX kernel log messages.

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dmsg

dmesg

cmsg

cmesg

Which of following is not an advantage of multiprogramming.

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Increased through out

Shorter response time

Ability to assign priories of jobs

Decreased system overload

Which command is used to set terminal input output characteristics

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Atty

stty

dtty

itty

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