PCA (Prometheus Certified Associate) sample exam question with answer 410

Question:
Which of the following PromQL expressions can be used to calculate the rate of HTTP requests per minute over the past 5 minutes?

1. rate(http_requests_total[5m]) * 60
2. delta(http_requests_total[5m]) / 300
3. increase(http_requests_total[5m]) / 300
4. sum(rate(http_requests_total[5m])) / 60

Answer:
D - is the correct answer. This expression first calculates the rate of HTTP requests per second over the past 5 minutes using the rate() function, and then uses the sum() function to add up those rates and divide by 60 to get the rate per minute