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MCQ

Q.

The __________ is used by device controllers to request service.

A

nonmaskable interrupt

B

blocked interrupt

C

maskable interrupt

D

none of the mentioned

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Windows NT uses a __________ implementation for I/O.

A

message

B

draft

C

secondary memory

D

cache

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2.

The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.

A

interrupt request line

B

device driver

C

interrupt handler

D

all of the mentioned

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3.

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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4.

The host sets _____ bit when a command is available for the controller to execute.

A

write

B

status

C

command-ready

D

control

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5.

Which buffer holds the output for a device?

A

spool

B

output

C

status

D

magic

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