Question # 1

By which command content of a file can be searched.

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grep

search

srh

show

Macintosh computer uses

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System 7.0

AU/X

Xenix

None

Distributed system should.

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High security

Have better resource sharing

Better system utilization

Low system overhead

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

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Segmentation

Swapping

Demand paging

Multiple contiguous fixed partitions

Shortest job First executes first the job.

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With the least processor needs

That first entered the queue

That has been in the queue for the longest

That last entered the queue

The system calls in UNIX is written using which language.

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Java

C

C++

Assembly

Printer in the file structure can be found in.

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/etc

/html

/www

/dev

In which scheduling policies context switching never takes place

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FCFS

Round robin

Shortest job first

Pre empitive

Dynamic allocation of storage areas with VSAM files is accomplished by

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Hashing

Control splits

Over flow areas

Relative recording

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

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

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Integer

String

Float

Chracter

What is the meaning of SVR 4

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System five release 4

System version release 4

System five relocated 4

Storage files five release 4

What is property of UNIX.

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Multi user

Multi processes

Multi tasking

All of above

Which one shows the name of the operating system.

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U name -n

Uname -I

U name - m

U name -o

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

Seek analysis is for.

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Paging issues

Device busy problems

Control unit busy problems

All of above

Which command gives the first byte where the difference is in the file 1 & file2

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Diff

differ

Cmp

Compare

What control character signals the end of the input file.

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Ctrl + s

Ctrl + z

Ctrl + w

Ctrl + d

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

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Round robin

FCFS

Pre-emptive scheduling

Random scheduling

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

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