CompTIA Cloud Essentials+ (CLO-002)Business Principles of Cloud EnvironmentsHard
A cloud provider offers a database service with a guaranteed uptime of 99.99% per year. If a year has 365 days, how many minutes of downtime, rounded to the nearest minute, is the provider allowed to have before breaching the SLA?
- A26 minutes
- B5 minutes
- C53 minutes
- D10 minutes
Show answer & explanationAnswer & explanation
Correct answer: C. 53 minutes
A year has 365 days * 24 hours/day * 60 minutes/hour = 525,600 minutes. The allowed downtime is 100% - 99.99% = 0.01%. So, 0.01% of 525,600 minutes = 0.0001 * 525,600 = 52.56 minutes. Rounded to the nearest minute, this is 53 minutes.
Why the other options are wrong
- A. This would be downtime for approximately 99.995% uptime.
- B. This would be for a much higher uptime percentage.
- D. Incorrect calculation.
SLA Downtime Calculation (High Uptime)
Calculating maximum allowed service outage for very high uptime percentages (e.g., 'four nines' or 99.99%) over extended periods like a year.
- High uptime percentages mean very little allowed downtime.
- Accurate calculation requires precise total minutes in the period.
- Rounding to the nearest minute is often required for practical reporting.
Memory trick: Percent up, then time down, to keep the service sound.