Question # 1

which option of 'grep' displays the line number as well.

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-n

-i

-d

-al

By which of following the problem of thrashing is significantly affected.

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Program size

Program structure

Primary storage

Secondary strorage

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

Super visor state is only allowed to.

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Utility softwares

Application sotware

Operating system

Guest user

Main function of shared memory is.

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To use primary memory efficiently

To do intra process communication

All of above

None

Which command is used to extract a column from a text file.

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get

tar

untar

cut

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

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which

whom

locate

wex

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 one shows the name of the operating system.

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U name -n

Uname -I

U name - m

U name -o

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

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

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Segmentation

Swapping

Demand paging

Multiple contiguous fixed partitions

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

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Chat

Talk

Write

Sending

The system calls in UNIX is written using which language.

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Java

C

C++

Assembly

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

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Instruction

Compiler

Program

Interpretor

A hardware device which is capable of executing a sequence of instructions, is known as.

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CPU

ALU

CU

Processor

For multiprogramming operating system.

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Special support from processor is essential

Special support from processor is not essential

Cache memory is essential

None of abvoe

What are the global locks.

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They synchronize access to local resources.

They synchronize access to global resources

They synchronize access to local and global resources

None of above

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

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Round robin

FCFS

Pre-emptive scheduling

Random scheduling

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

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Printline

cmp

com

comn

Which one is true.

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The linkage editor is used to edit program which have to later link together.

The linkage editor links object module during compling

The linkage editor links objects modules and resolves external reference between them before loading.

None of above

Memory protection is normally done by

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The processor and the associated hardware

The operating system

The compiler

The user program

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