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Q.

In polling ____________

A

busy-wait cycles wait for I/O from device

B

interrupt handler receives interrupts

C

interrupt-request line is triggered by I/O device

D

all of the mentioned

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MCQ

1.

The kernel data structures include ____________

A

process table

B

open file table

C

close file table

D

all of the mentioned

Discussion

MCQ

2.

When hardware is accessed by reading and writing to the specific memory locations, then it is called ____________

A

port-mapped I/O

B

controller-mapped I/O

C

bus-mapped I/O

D

none of the mentioned

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3.

The ______ register is written by the host to send output.

A

status

B

control

C

data in

D

data out

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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

Discussion

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5.

A ________ is a collection of electronics that can operate a port, a bus, or a device.

A

controller

B

driver

C

host

D

bus

Discussion

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