GATE CSE 2022 | IO Interface Question 6 | Computer Organization

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GATE CSE 2022

MCQ (Single Correct Answer)

-0.33

Which one of the following facilitates transfer of bulk data from hard disk to main memory with the highest throughput?

DMA based I/O transfer

Interrupt driven I/O transfer

Polling based I/O transfer

Programmed I/O transfer

GATE CSE 2021 Set 2

Numerical

-0

Consider a computer system with DMA support. The DMA module is transferring one 8-bit character in one CPU cycle from a device to memory through cycle stealing at regular intervals. Consider a 2 MHz processor. If 0.5% processor cycles are used for DMA, the data transfer rate of the device is __________ bits per second.

Your input ____

GATE CSE 2011

MCQ (Single Correct Answer)

-0.3

A computer handles several interrupt sources of which of the following are relevant for this question.

$$ * \,\,\,\,\,\,\,\,\,\,\,$$ Interrupt from $$CPU$$ temperature sensor (raises interrupt if $$CPU$$
$$\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$ temperature is too high)
$$ * \,\,\,\,\,\,\,\,\,\,\,$$ Interrupt from Mouse (raises interrupt if the mouse is moved or a button is
$$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$$pressed)
$$ * \,\,\,\,\,\,\,\,\,\,\,$$ Interrupt from Keyboard (raises interrupt when a key is pressed or released)
$$ * \,\,\,\,\,\,\,\,\,\,\,$$ Interrupt from Hard Disk (raises interrupt when a disk read is completed)

Which one of these will be handled at the $$HIGHEST$$ priority?

Interrupt from Hard Disk

Interrupt from Mouse

Interrupt from Keyboard

Interrupt from $$CPU$$ temperature sensor

GATE CSE 2009

MCQ (Single Correct Answer)

-0.3

A $$CPU$$ generally handles an interrupt by executing an interrupt service routine

as soon as an interrupt is raised

by checking the interrupt register at the end of fetch cycle

by checking the interrupt register after finishing the execution of the current instruction