Question # 1

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

File can have.

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Read access

Write access

Copy access

All of above

Which is non pre emptive

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Round robin

FIFO

MS

MSF

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

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-n

-i

-d

-al

Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.

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Buffer cache

Spooling

Pooling

Virtual memory

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

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Virtual storage

Time sharing

Multi programming

Multi heading

Daisy chain is a device for

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Connecting a number of controllers to a device

Connecting a number of device to a controller

all of above

None of above

Belady anomaly occurs in.

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LIFO

FIFO

LRU

NRU

Which among following is considered as super daemon.

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Sysinit

Grep

Init

Locate

Memory protection is normally done by

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The processor and the associated hardware

The operating system

The compiler

The user program

In which scheduling policies context switching never takes place

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FCFS

Round robin

Shortest job first

Pre empitive

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

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