Dell EMC Associate – Information Storage and Management v4 — Question 46

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?

Answer options

Correct answer: A

Explanation

The correct answer is 70% because Port 2 was down for a total of 14 hours out of a possible 70 hours of operation (12 hours each on Monday to Friday, plus 4 hours on Saturday). This results in an availability calculation of (70-14)/70, which simplifies to 70%. The other options are incorrect as they either overestimate the downtime or miscalculate the total available hours.