Exam DEA-1TT4 topic 1 question 3 discussion

Actual exam question from Dell's DEA-1TT4

Question #: 3
Topic #: 1

An Ethernet switch has eight ports and all ports must be operational for 24 hours, from Monday through Friday. However, a failure of Port4 occurs as follows: "¢ Monday = 8 PM to 9 PM "¢ Wednesday 7 PM to 9 PM "¢ Thursday = 6 AM to 9 AM "¢ Saturday = 4 PM to 7 PM
What is the MTTR of Port 4?

A. 2 hours
B. 3 hours
C. 28 hours
D. 38 hours

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Suggested Answer: A

by madmax67 at Oct. 19, 2020, 10:34 a.m.

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madmax67

1 month ago

MTTR = Meantime to Repair. ISMv4 PArticipant Guide: MTTR: Average time required to repair a failed component MTTR = Total downtime / Number of failures Given downtimes per failure: 8 to 9 PM = 1h 7 to 9 PM = 2h 6 to 9 AM = 3h 4 to 7 PM = 3h Calculation: 9h downtime / 4 incidents = 2,25h MTTR Conclusion: 2 h 15 m should be the correct answer.

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Varunraj

2 days, 8 hours ago

No need to consider the downtime for Saturday since the question mentioned about Monday to Friday. So MTTR will be 6h downtime/3 incidents = 2

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Exam DEA-1TT4 topic 1 question 3 discussion

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madmax67

Varunraj

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