Question # 1

Which scheduling policy is best suited for time sharing operating system.

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Shortest job first

Round robin

First come first serve

Elevator

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

Fragmentation of a file system.

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Occurs only is file is not used properly

Can always the prevented

Happens in all file systems.

Can be removed by conmpaction

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

Scissoring enables

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A part of data to be displayed

Entire data to be displayed

Full data display on full area of seen

No data display

Remote computing services involves the use of time sharing and

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Multiprocessing

Interactive processing

Batch processing

Real time processing

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

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dd

du

dt

di

Super visor state is only allowed to.

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Utility softwares

Application sotware

Operating system

Guest user

To avoid the race condition the number of process that may be simultaneously inside the critical section is

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1

3

0

12

Which of following need a device driever.

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Cache

Disk

Main memory

Registers

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

By which command content of a file can be searched.

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grep

search

srh

show

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

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Program size

Program structure

Primary storage

Secondary strorage

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

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-n

-i

-d

-al

Solaris is product of.

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IBP

IBM

Microsoft

Sun microsystmes

What are the global locks.

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They synchronize access to local resources.

They synchronize access to global resources

They synchronize access to local and global resources

None of above

Belady anomaly occurs in.

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LIFO

FIFO

LRU

NRU

Which is non pre emptive

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Round robin

FIFO

MS

MSF

Printer in the file structure can be found in.

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/etc

/html

/www

/dev

Distributed systems should.

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Meet time constraints

Aim better resource sharing

Aim better system utilization

Aim low system overhead

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

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Virtual storage

Time sharing

Multi programming

Multi heading

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