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