The per-second rate of increase of a counter metric.
C.
The average of all values in a vector.
D.
The number of samples in a range vector.
The Answer Is:
B
This question includes an explanation.
Explanation:
Therate()function calculates theaverage per-second rate of increaseof a counter over the specified range. It smooths out short-term fluctuations and adjusts for counter resets.
Example:
rate(http_requests_total[5m])
returns the number of requests per second averaged over the last five minutes. This function is frequently used in dashboards and alerting expressions.
[References:Prometheus documentation –rate() Function Definition,Counter Handling in PromQL., ]
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