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MCQ

Q.

Which hardware triggers some operation after certain programmed count?

A

programmable interval timer

B

interrupt timer

C

programmable timer

D

none of the mentioned

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MCQ

1.

A non blocking system call _________________

A

halts the execution of the application for an extended time

B

does not halt the execution of the application

C

does not block the interrupts

D

none of the mentioned

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2.

What is an ISR?

A

Information Service Request

B

Interrupt Service Request

C

Interrupt Service Routine

D

Information Service Routine

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3.

The device-status table contains ____________

A

each I/O device type

B

each I/O device address

C

each I/O device state

D

all of the mentioned

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4.

Division by zero, accessing a protected or non existent memory address, or attempting to execute a privileged instruction from user mode are all categorized as ________

A

errors

B

exceptions

C

interrupt handlers

D

all of the mentioned

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5.

Buffering is done to ____________

A

cope with device speed mismatch

B

cope with device transfer size mismatch

C

maintain copy semantics

D

all of the mentioned

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