Linux Foundation PCA practice materials Questions Answers

Exam Code:
PCA
Exam Name:
Prometheus Certified Associate Exam
Last Update:
Jun 01,2026

60 Questions Answers Verified by Experts!


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Linux Foundation PCA Questions for Linux Foundation Cloud & Containers Certification Exam 2026

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Page: 1 / 12
Total Questions: 60

Questions & Answers PDF

• Question 1

  

  Which function would you use to calculate the 95th percentile latency from histogram data?

  • quantile_over_time(0.95, http_request_duration_seconds[5m])
  • histogram_quantile(0.95, sum(rate(http_request_duration_seconds_bucket[5m])) by (le))
  • percentile(http_request_duration_seconds, 0.95)
  • topk(0.95, http_request_duration_seconds)

  Reveal Answer Answer: B Next Question

• Question 2

  

  Which exporter would be best suited for basic HTTP probing?

  • JMX exporter
  • Blackbox exporter
  • Apache exporter
  • SNMP exporter

  Reveal Answer Answer: B Next Question

• Question 3

  

  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.

  Reveal Answer Answer: B Next Question

• Question 4

  

  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.

  Reveal Answer Answer: B Next Question

• Question 5

  

  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.

  Reveal Answer Answer: B Next Question

• Question 6

  

  Which kind of metrics are associated with the function deriv()?

  • Counters
  • Gauges
  • Summaries
  • Histograms

  Reveal Answer Answer: B Next Question

• Question 7

  

  What is considered the best practice when working with alerting notifications?

  • Minor alerts are as important as major alerts and should be treated with equal care.
  • Have as few alerts as possible by alerting only when symptoms might become externally visible.
  • Have as many alerts as possible to catch minor problems before they become outages.
  • Make sure to generate alerts on every metric of every component of the stack.

  Reveal Answer Answer: B Next Question

• Question 8

  

  Which metric type uses the delta() function?

  • Info
  • Histogram
  • Gauge
  • Counter

  Reveal Answer Answer: C Next Question

• Question 9

  

  What is the best way to expose a timestamp from your application?

  • With a gauge that has the timestamp as value.
  • With a constant metric of value 1 and the timestamp as metric timestamp.
  • With a counter that is increased to the correct value.
  • With a constant metric of value 1 and the timestamp as label.

  Reveal Answer Answer: A Next Question

• Question 10

  

  Given the metric prometheus_tsdb_lowest_timestamp_seconds, how do you know in which month the lowest timestamp of your Prometheus TSDB belongs?

  • format_date(prometheus_tsdb_lowest_timestamp_seconds,"%M")
  • prometheus_tsdb_lowest_timestamp_seconds % month
  • month(prometheus_tsdb_lowest_timestamp_seconds)
  • (time() - prometheus_tsdb_lowest_timestamp_seconds) / 86400

  Reveal Answer Answer: D Next Question

Page: 1 / 12
Total Questions: 60

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