Interrupts and Polling

Question 1

What is polling

Answer 1

Polling is the regular checking of an event to see whether it has occurred.

Question 2

What is the advantages of polling

Answer 2

It is predictable and will only occur at a specific point

Question 3

What is the disadvantage of polling

Answer 3

It is inefficient in terms of the CPU processing time.

Question 4

What is an interrupt

Answer 4

An interrupt is a signal with a priority label with either a high or low priority and if it is high the CPU will stop what it is doing and complete the interrupt task

Question 5

What are disadvantages of polling?

Answer 5

It can increase the latency of the CPU

It can cause a stack overflow error