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MCQ

Q.

Which buffer holds the output for a device?

A

spool

B

output

C

status

D

magic

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1.

What is a trap/exception?

A

hardware generated interrupt caused by an error

B

software generated interrupt caused by an error

C

user generated interrupt caused by an error

D

none of the mentioned

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2.

What is a dedicated device?

A

opposite to a sharable device

B

same as a sharable device

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can be used concurrently by several processes

D

none of the mentioned

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3.

The interrupt vector contains ____________

A

the interrupts

B

the memory addresses of specialized interrupt handlers

C

the identifiers of interrupts

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the device addresses

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The CPU hardware has a wire called __________ that the CPU senses after executing every instruction.

A

interrupt request line

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interrupt bus

C

interrupt receive line

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interrupt sense line

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5.

A process is moved to wait queue when I/O request is made with ____________

A

non-blocking I/O

B

blocking I/O

C

asynchronous I/O

D

synchronous I/O

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