A service must be available 24×7. It also requires 99.999% availability. How much total downtime
can the service tolerate in one year?

A.
About 5 seconds

B.
About 5 minutes

C.
About 50 minutes

D.
About 5 hours

Explanation:
Reference:http://docs.oracle.com/cd/E19636-01/819-2326/aavch/index.html