Question # 1

Which of the following is always there in a computer.

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Batch system

Operating system

Time sharing system

Controlling system

Which scheduling policy is most suitable for time shared operating system.

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Shortest job first

FCFS

LCFS

Round robin

Creating a job queue is a function of

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Spooler

Interpolator

Complier

Drive

Multiprogramming system

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Are easier to develop than signal programming system.

Execute each job faster

Execute more jobs in the same time

Are used only on large main frame computers.

For multiprogramming operating system.

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Special support from processor is essential

Special support from processor is not essential

Cache memory is essential

None of abvoe

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

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Diff

differ

Cmp

Compare

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 real time OS, which is most suitable scheduling scheme.

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Round robin

FCFS

Pre-emptive scheduling

Random scheduling

Which among the following is used to write small program to control Linux Functionalities.

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Shell commands

Shell script

C

Java

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

All the abbreviations is vi editor can be shown by

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All

ab

atat

ashow

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

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Program size

Program structure

Primary storage

Secondary strorage

A high paging rate

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May cause a high I/O rate

Keeps the system running well

Is a symptom of too much processor activity

Always creates a slow system.

In which scheduling policies context switching never takes place

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FCFS

Round robin

Shortest job first

Pre empitive

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

Which type of software can be used to merge data of two files in one files.

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System software

Networking software

Documenting software

utility software

Which command is used to set limits on file size.

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U limit

Alimit

dlimit

wilmit

Which command is used to copy files.

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cp

copy

mv

move

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

Dynamic allocation of storage areas with VSAM files is accomplished by

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Hashing

Control splits

Over flow areas

Relative recording

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

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1981

1982

1983

1984

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