What is the MTTR of Port 7?

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An Ethernet switch has eight ports and all ports must be operational for 24 hours from Monday through Friday.

However, a failure of Port 7 occurs as follows:

● Monday=4 PM to 11 PM

● Wednesday= 2 PM to 10 PM

● Friday= 5 AM to11 AM

What is the MTTR of Port 7?
A . 36 hours
B. 5 hours
C. 7 hours
D. 33 hours

Answer: C