PCA Instrumentation And Exporters Practice Question
Which TWO of the following are true regarding Prometheus Histograms?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They are cumulative
Histograms consist of cumulative counters and allow for server-side quantile calculation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
They calculate quantiles client-side
Why it's wrong here
Summaries do that; histograms do it server-side.
- ✗
They do not use labels
Why it's wrong here
They support labels.
- ✓
They are cumulative
Why this is correct
Correct.
- ✓
They support aggregation across instances
Why this is correct
Correct.
- ✗
They are only for Gauges
Why it's wrong here
They are a distinct type.
About these practice questions
Courseiva writes every PCA question from scratch — 304 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.