Question # 1

Which operating system reacts in the acutal time.

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Batch system

Quick response system

Real time system

Time sharing system

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

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

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Shortest job first

FCFS

LCFS

Round robin

What is property of UNIX.

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Multi user

Multi processes

Multi tasking

All of above

Disk scheduling includes decinding

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Which should be accessed next

Order in which disk access requests must be serviced

The physical location of the file

the logical location of the file

Distributed systems should.

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Meet time constraints

Aim better resource sharing

Aim better system utilization

Aim low system overhead

Remote computing services involves the use of time sharing and

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Multiprocessing

Interactive processing

Batch processing

Real time processing

Which is not a valid file type in LINUX.

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Socket

FIFO

Soft link

Inode

In vi editor which command sets the number for all lines.

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Set nu

Set ni

Set sn

Set sl

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

When did IBM released the first version of its disk operating system DOS version 1.0

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1981

1982

1983

1984

All device files are stored in which directory.

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/etc

/dev

/www

/html

Memory protection is normally done by

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The processor and the associated hardware

The operating system

The compiler

The user program

Seek analysis is for.

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Paging issues

Device busy problems

Control unit busy problems

All of above

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

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Segmentation

Swapping

Demand paging

Multiple contiguous fixed partitions

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

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Program size

Program structure

Primary storage

Secondary strorage

Which of the following does not interrupt an running process.

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A device

Timer

Scheduler process

Power failure

Which command is used to know the LINUX version.

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Uname

Vname

Iname

s name

Which command is used to set limits on file size.

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U limit

Alimit

dlimit

wilmit

Re location bits used by relocating loader are a pacified by

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Relocating loader

Assembler

Translator

Linker

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

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