Direct Memory Access Questions

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11.

The controller uses _____ to help with the transfers when handling network interfaces.

A

Input Buffer storage

B

Signal enhancers

C

Bridge circuits

D

All of the mentioned

Correct Answer: A

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12.

To overcome the conflict over the possession of the BUS we use ______

A

Optimizers

B

BUS arbitrators

C

Multiple BUS structure

D

None of the mentioned

Correct Answer: B

The BUS arbitrator is used to overcome the contention over the BUS possession.

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13.

The registers of the controller are ______

A

64 bits

B

24 bits

C

32 bits

D

16 bits

Correct Answer: C

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14.

When the process requests for a DMA transfer?

A

Then the process is temporarily suspended

B

The process continues execution

C

Another process gets executed

D

process is temporarily suspended & Another process gets executed

Correct Answer: D

The process requesting the transfer is paused and the operation is performed, meanwhile another process is run on the processor.

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15.

The DMA transfer is initiated by _____

A

Processor

B

The process being executed

C

I/O devices

D

OS

Correct Answer: C

The transfer can only be initiated by an instruction of a program being executed.

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