CV0-002 · Question #233
A new application with availability SLA requirements of 99.99% has been deployed in a cloud. For a test spanning a month, which of the following unavailability times would mean the test was…
The correct answer is A. 1 minute B. 4 minutes. To determine if a test was successful for an application with a 99.99% availability SLA over a month, calculate the maximum allowable downtime. A successful test would mean the unavailability time did not exceed this calculated limit.
Question
A new application with availability SLA requirements of 99.99% has been deployed in a cloud. For a test spanning a month, which of the following unavailability times would mean the test was successful? (Select TWO).
Options
- A1 minute
- B4 minutes
- C10 minutes
- D30 minutes
- E60 minutes
How the community answered
(38 responses)- A74% (28)
- C16% (6)
- D8% (3)
- E3% (1)
Why each option
To determine if a test was successful for an application with a 99.99% availability SLA over a month, calculate the maximum allowable downtime. A successful test would mean the unavailability time did not exceed this calculated limit.
A month has approximately 30 days * 24 hours/day * 60 minutes/hour = 43,200 minutes. For 99.99% availability, the maximum allowed downtime is 0.01% of the total time, which is 0.0001 * 43,200 minutes = 4.32 minutes. Therefore, an unavailability time of 1 minute is well within the acceptable limit.
An unavailability time of 4 minutes is also within the calculated maximum allowed downtime of 4.32 minutes for a 99.99% availability SLA over a month. Both 1 minute and 4 minutes demonstrate compliance with the availability target.
An unavailability time of 10 minutes exceeds the maximum allowable downtime of 4.32 minutes for a 99.99% SLA over a month.
An unavailability time of 30 minutes significantly exceeds the maximum allowable downtime of 4.32 minutes for a 99.99% SLA over a month.
An unavailability time of 60 minutes (1 hour) is far beyond the maximum allowable downtime of 4.32 minutes for a 99.99% SLA over a month.
Concept tested: SLA calculation, availability metrics
Source: https://azure.microsoft.com/en-us/support/legal/sla/
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