What is the MTBF of Port 5?

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

However, a failure of Port 5 occurs as follows:

Tuesday = 6 AM to 7 AM

Thursday = 5 PM to 9 PM

Friday = 8 AM to 9 AM

What is the MTBF of Port 5?
A . 30 hours
B . 32 hours
C . 40 hours
D . 38 hours

View Answer

Answer: C

Explanation:

Reference: https://www.sqconline.com/mtbf-calculator-results