An Ethernet switch has eight ports and all ports must be operational for 24 hours, from Monday through Friday.
However, a failure of Port4 occurs as follows:
– Monday = 8 PM to 9 PM
– Wednesday 7 PM to 9 PM
– Thursday = 6 AM to 9 AM
– Saturday = 4 PM to 7 PM
What is the MTTR of Port 4?
A . 2 hours
B . 3 hours
C . 28 hours
D . 38 hours
Answer: A
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