Question # 1

Which command is used to set terminal input output characteristics

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Atty

stty

dtty

itty

Distributed systems should.

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Meet time constraints

Aim better resource sharing

Aim better system utilization

Aim low system overhead

Dijkstra's algorithm deals with

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Mutual exclusion

Dead lock avoidance

Dead lock recovery

Real time processing

Which operating system use write through catches.

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UNIX

XENIX

ULTRIX

DOS

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

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

Which is non pre emptive

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Round robin

FIFO

MS

MSF

By which command content of a file can be searched.

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grep

search

srh

show

Which is the most important for Multi taskiing.

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Modularity

Time sharing

Multi programming

Multi user

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

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1981

1982

1983

1984

Which command is used to determine the path of an executable file.

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which

whom

locate

wex

Dirty bit is used ot show

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Page with corrupted data

Wrong page in memory

Page that a modified after being loaded in the cache memory

Page that is less frequently accessed

A hardware device which is capable of executing a sequence of instructions, is known as.

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CPU

ALU

CU

Processor

Memory protection is normally done by

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The processor and the associated hardware

The operating system

The compiler

The user program

Which of following need a device driever.

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Cache

Disk

Main memory

Registers

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 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 operating system reacts in the acutal time.

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Batch system

Quick response system

Real time system

Time sharing system

Seek analysis is for.

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Paging issues

Device busy problems

Control unit busy problems

All of above

Banker's algorithm deals with

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Dead lock prevention

Dead lock avoidance

Dead look recovery

Mutual exclusion

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

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