A Fibre Channel switch has eight ports and all ports must be operational from 8 AM to 8 PM, Monday through Friday.
However, a failure of Port 2 occurs on a particular week as follows:
Monday = 10 AM to 12 PM
Wednesday = 4 PM to 9 PM
Thursday = 4 PM to 7 PM
Friday = 3 PM to 6 PM
Saturday = 9 AM to 1 PM
What is the availability of Port 2 in that week?
A . 70%
B . 71.6%
C . 78.3%
D . 80%
Answer: A