Google Cloud Professional Cloud DevOps Engineer — Question 55

You need to define Service Level Objectives (SLOs) for a high-traffic multi-region web application. Customers expect the application to always be available and have fast response times. Customers are currently happy with the application performance and availability. Based on current measurement, you observe that the
90
percentile of latency is 120ms and the 95
percentile of latency is 275ms over a 28-day window. What latency SLO would you recommend to the team to th th publish?

Answer options

• A. 90 percentile ג€" 100ms th 95 percentile ג€" 250ms th
• B. 90 percentile ג€" 120ms th 95 percentile ג€" 275ms th
• C. 90 percentile ג€" 150ms th 95 percentile ג€" 300ms th
• D. 90 percentile ג€" 250ms th 95 percentile ג€" 400ms th

Correct answer: C

Explanation

The recommended SLOs need to allow for some buffer above the current latency measurements to maintain customer satisfaction. Option C provides a reasonable increase over the observed latencies, ensuring that the application remains performant while still challenging the team to maintain high standards. Options A and B set the SLOs too close to the current measurements, while D sets them too high, risking customer dissatisfaction.