Dell-EMC
D-ISM-FN-23 · Question #311
The Ethernet switch has eight ports and all ports must be operational for 24 hours, from Monday through Friday. However, a failure of Port 4 occurs as follows: Monday = 8 PM to 11 PM Wednesday = 7…
The correct answer is D. 4 hours. MTTR = Total downtime for Port 4 / Number of failures of Port 4 MTTR = 12 hours / 3 = 4 hours
Storage Management
Question
The Ethernet switch has eight ports and all ports must be operational for 24 hours, from Monday through Friday. However, a failure of Port 4 occurs as follows:
Monday = 8 PM to 11 PM Wednesday = 7 PM to 10 PM Thursday = 6 AM to 12 PM What is the MTTR of Port 4?
Options
- A28 hours
- B2 hours
- C38 hours
- D4 hours
How the community answered
(45 responses)- A9% (4)
- B4% (2)
- C16% (7)
- D71% (32)
Explanation
MTTR = Total downtime for Port 4 / Number of failures of Port 4 MTTR = 12 hours / 3 = 4 hours
Topics
#MTTR#availability metrics#fault management#downtime calculation
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