Question 1. which of the of the following statement(s) is(are) correct?

(a) Using polling implies that the input is repeatedly tested.

(b) Polling ties up programming resource even when there is no input action, and yet (depending on loop repetition rate) may not give a rapid response when there is a change.

(c) Using an event-driven response (i.e. an interrupt) means that response is rapid when a change takes place, and relevant code is only invoked when it is needed.

(d) Polling requires software support but interrupt does not.

(e) Interrupt can be disabled but polling can not be disabled.

Question 2. the processor can't perform any other operations during a polling routine and all inputs are treated as equal so the urgent change has to wait its turn before it's recognized by the computer.

(a) True

(b) False