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MCQ

Q.

How does the Hardware trigger an interrupt?

A

Sending signals to CPU through a system bus

B

Executing a special program called interrupt program

C

Executing a special program called system program

D

Executing a special operation called system call

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1.

Caching ____________

A

holds a copy of the data

B

is fast memory

C

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D

holds output for a device

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The ________ keeps state information about the use of I/O components.

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CPU

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OS

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kernel

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A ________ is a full duplex connection between a device driver and a user level process.

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4.

DMA is used for __________

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Low speed devices

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For large data transfers, _________ is used.

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DMA

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programmed I/O

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controller register

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none of the mentioned

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