Question

Your network contains certain servers that typically fail once every five years. The total cost of one of these servers is $1000. Server technicians are paid $40 per hour, and a typical replacement requires two hours. Ten employees, earning an average of $20 per hour, rely on these servers, and even one of them going down puts the whole group in a wait state until it’s brought back up. Which of the following represents the ARO for a server?
A. $296
B. $1480
C. $1000
D. 0.20

Answer 1

Answer: D. 0.20

Explanation:

The Annualized Rate of Occurrence (ARO) shows the chances that an event would occur in a year.

Formula:

= Number of times event occurs / Number of years it occurs in

= Number of times server fails / Number of years

= 1 / 5

= 0.20