Question

What is Availability?

(a) It measures the proportion of time the system is up

(b) It measures the proportion of time the system is running

(c) It measures the proportion of time the system is up and running

(d) None of the mentioned

The question was posed to me by my school teacher while I was bunking the class.

Question is from System Quality Attributes Discernable At Runtime topic in division Architectural Patterns and Styles of Software Architecture

Answer 1

The correct choice is (c) It measures the proportion of time the system is up and running

Easiest explanation: Availability – measures the proportion of time the system is up and running.