Free Prometheus Certified Associate Exam PCA Exam Practice Test

What is the name of the official *nix OS kernel metrics exporter?

• Prometheus_exporter
• node_exporter
• metrics_exporter
• os_exporter

How can you send metrics from your Prometheus setup to a remote system, e.g., for long-term storage?

• With "scraping"
• With "remote write"
• With S3 Buckets
• With "federation"

When can you use the Grafana Heatmap panel?

• You can use it to graph a counter metric.
• You can use it to graph a histogram metric.
• You can use it to graph an info metric.
• You can use it to graph a gauge metric.

Which Prometheus component handles service discovery?

• Alertmanager
• Prometheus Server
• Pushgateway
• Node Exporter

Which of the following signals belongs to symptom-based alerting?

• API latency
• Disk space
• Database availability
• CPU usage

What does the rate() function in PromQL return?

• The total increase of a counter over a range.
• The per-second rate of increase of a counter metric.
• The average of all values in a vector.
• The number of samples in a range vector.

How would you correctly name a metric that provides metadata information about the binary?

• app_build_info
• app_build
• app_metadata
• app_build_desc

If the vector selector foo[5m] contains 1 1 NaN, what would max_over_time(foo[5m]) return?

• It errors out.
• 1
• NaN
• No answer.

Which PromQL expression computes how many requests in total are currently in-flight for the following time series data?apiserver_current_inflight_requests{instance="1"} 5apiserver_current_inflight_requests{instance="2"} 7

• min(apiserver_current_inflight_requests)
• sum(apiserver_current_inflight_requests)
• max(apiserver_current_inflight_requests)
• sum_over_time(apiserver_current_inflight_requests[10m])

What does the increase() function do in PromQL?

• Calculates the percentage increase of a counter over time.
• Returns the absolute increase in a counter over a specified range.
• Calculates the derivative of a gauge over time.
• Returns the total sum of values in a vector.