PCA Instrumentation And Exporters Practice Question
Which THREE of the following are key design considerations when creating a custom exporter?
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
✓
Expose metrics in Prometheus text format
Key factors include avoiding high cardinality, ensuring the metrics are exposed via HTTP, and keeping performance overhead low.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Only export metrics once a day
Why it's wrong here
Prometheus expects regular scraping.
- ✓
Expose metrics in Prometheus text format
Why this is correct
Correct.
- ✓
Avoid high cardinality in labels
Why this is correct
Correct.
- ✓
Ensure scraping performance is efficient
Why this is correct
Correct.
- ✗
Use JSON for metric output
Why it's wrong here
Prometheus prefers custom text format.
About these practice questions
This PCA question is part of Courseiva's 304-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam 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.