PCA Prometheus Fundamentals Practice Question
Which THREE factors influence Prometheus memory usage?
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
✓
Number of alerts
Memory is consumed by the number of series, the size of the WAL, and the number of active alerts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Number of alerts
Why this is correct
Alert evaluation consumes memory.
- ✗
Number of dashboards
Why it's wrong here
Dashboards live in the browser.
- ✓
WAL size
Why this is correct
WAL buffers take memory.
- ✓
Number of active time series
Why this is correct
Directly impacts index size.
- ✗
Scrape interval
Why it's wrong here
Impacts ingestion, not resident memory as much as series count.
About these practice questions
One of 304 original PCA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.