Question # 1

Which operating system use write through catches.

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UNIX

XENIX

ULTRIX

DOS

Which among following is considered as super daemon.

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Sysinit

Grep

Init

Locate

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

To display disk consumption of a specific directory which command is used.

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dd

du

dt

di

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

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1981

1982

1983

1984

The system calls in UNIX is written using which language.

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Java

C

C++

Assembly

Which is not a valid file type in LINUX.

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Socket

FIFO

Soft link

Inode

Seek analysis is for.

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Paging issues

Device busy problems

Control unit busy problems

All of above

Which process is known for initializing a microcomputer with its OS.

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Cold booting

Boot recording

Booting

Warm booting

Which one shows the name of the operating system.

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U name -n

Uname -I

U name - m

U name -o

Which among following scheduling algorithms give minimum average waiting time.

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FCFS

SJF

Round rabin

On priority

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

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Printline

cmp

com

comn

Distributed systems should.

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Meet time constraints

Aim better resource sharing

Aim better system utilization

Aim low system overhead

Which is the most important for Multi taskiing.

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Modularity

Time sharing

Multi programming

Multi user

Belady anomaly occurs in

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Optimal replacement

FIFO

LRU

Both in FIFO and LRU

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

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Program size

Program structure

Primary storage

Secondary strorage

if the CPU scheduling policy is FCFS then what would be average waiting time.

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10 ms

10.8 ms

12 ms

12.8 ms

What control character signals the end of the input file.

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Ctrl + s

Ctrl + z

Ctrl + w

Ctrl + d

File can have.

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Read access

Write access

Copy access

All of above

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

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-n

-i

-d

-al

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

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

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