A computer handles several interrupt sources of which of

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A computer handles several interrupt sources of which of the following are relevant?
Interrupt from CPU temperature sensor
Interrupt from Mouse
Interrupt from Keyboard
Interrupt from Hard disk

1. Interrupt from Hard disk
2. Interrupt from Mouse
3. Interrupt from Keyboard
4. Interrupt from CPU temperature sensor

Correct Option: D

Higher priority interrupt levels are assigned to requests which, if delayed or interrupted, could have serious consequences. Devices with high speed transfer such as magnetic disks are given high priority and slow diviser such as keyboard receive low priority. Mouse pointer moments are more frequent then keyboard ticks. So its obvious that its data transfer rate is higher than keyboard. Delaying a CPU temperature sensor could have serious consequences, overheat can damage CPU circuitry. From the above information we can conclude that priorities are - CPU temperature sensor > Hard disk > Mouse > Keyboard.