DEA-1TT5 · Question #369
A Fibre Channel switch has eight ports and all ports must be operational from 8 AM to 8 PM, Monday through Friday. However, a failure of Port 7 occurs in the week as follows: Monday = 11 AM to 12 PM…
The correct answer is C. 83.3%. Total Operation: 125= 60 Downtime: 1 + 4 + 1 + 4 = 10 Uptime = 60 - 10 = 50 Availability = Uptime / (Uptime + Downtime) = 50 /(50+10) = 0.833 100 = 83.3%
Question
A Fibre Channel switch has eight ports and all ports must be operational from 8 AM to 8 PM, Monday through Friday. However, a failure of Port 7 occurs in the week as follows:
Monday = 11 AM to 12 PM Wednesday = 4 PM to 9 PM Thursday = 4 AM to 9 AM Friday = 2 PM to 6 PM Saturday = 9 AM to 1 PM What is the availability of Port 7 in that week?
Options
- A75%
- B80%
- C83.3%
- D68.3%
How the community answered
(50 responses)- A12% (6)
- B6% (3)
- C80% (40)
- D2% (1)
Explanation
Total Operation: 12*5= 60 Downtime: 1 + 4 + 1 + 4 = 10 Uptime = 60 - 10 = 50 Availability = Uptime / (Uptime + Downtime) = 50 /(50+10) = 0.833 * 100 = 83.3%
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