Dell-EMC
D-ISM-FN-01 · Question #215
An Ethernet switch has eight ports and all ports must be operational for 24 hours; from Monday through Friday. However, a failure of Port 2 occurs as follows: - Monday = 5 PM to 9 PM - Wednesday = 4…
The correct answer is B. 36 hours. See the full explanation below for the reasoning.
Storage System Environment
Question
An Ethernet switch has eight ports and all ports must be operational for 24 hours; from Monday through Friday. However, a failure of Port 2 occurs as follows:
- Monday = 5 PM to 9 PM
- Wednesday = 4 PM to 9 PM
- Friday = 6 AM to 9 AM
- Sunday = 9 AM to 1 PM
What is the MTBF of Port 2?
Options
- A26 hours
- B36 hours
- C38 hours
- D40 hours
How the community answered
(29 responses)- A7% (2)
- B72% (21)
- C17% (5)
- D3% (1)
Topics
#MTBF#availability calculation#reliability#Ethernet switch
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