Dell EMC Associate – Information Storage and Management v5 — Question 19

The Ethernet switch has eight ports and all ports must be operational for 24 hours, from Monday through Friday. However, a failure of Port 4 occurs as follows:

Monday = 8 PM to 11 PM -

Wednesday = 7 PM to 10 PM -

Thursday = 6 AM to 12 PM -
What is the MTTR of Port 4?

Answer options

Correct answer: D

Explanation

The MTTR for Port 4 is calculated by summing the total downtime across the specified periods. Monday has 3 hours of downtime, Wednesday contributes 3 hours, and Thursday adds another 6 hours, totaling 12 hours. However, if we consider only the total time the port was down during each failure segment, it amounts to 4 hours, making D the correct answer. The other options do not accurately reflect the total downtime across the reported failures.