Question # 1

Which command is used to record a user login session in a file.

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script

Record

Copy

Session

File can have.

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Read access

Write access

Copy access

All of above

Which command in vi editor command is used to copy the current line of the file.

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ys

yy

yc

yw

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

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

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Instruction

Compiler

Program

Interpretor

Reference bit is used for

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Implementing LRU page replacement algorithm

Implementing NRU algorithm

To check the page table entry in the cache memory

None of above

Which is non pre emptive

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Round robin

FIFO

MS

MSF

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 is not a valid file type in LINUX.

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Socket

FIFO

Soft link

Inode

The system calls in UNIX is written using which language.

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Java

C

C++

Assembly

Which of the following does not interrupt an running process.

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A device

Timer

Scheduler process

Power failure

Seek analysis is for.

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Paging issues

Device busy problems

Control unit busy problems

All of above

In which of the following usually a front end processor is used.

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Virtual storage

Time sharing

Multi programming

Multi heading

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

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Set nu

Set ni

Set sn

Set sl

File inode number can be viewed by.

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-8

-1

-a

-t

Size of virtual memory depends on

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Size of data bus

Size of address bus

Size of main memory

None 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

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

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Shortest job first

FCFS

LCFS

Round robin

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

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

Creating a job queue is a function of

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Spooler

Interpolator

Complier

Drive

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

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