PCA Prometheus Fundamentals Practice Question
What is the default port that Prometheus listens on?
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
✓
9090
9090 is the well-known default port for the Prometheus server web interface.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
9100
Why it's wrong here
9100 is the default port for Node Exporter.
- ✗
9093
Why it's wrong here
9093 is the default port for Alertmanager.
- ✗
8080
Why it's wrong here
8080 is common for Java or general web apps.
- ✓
9090
Why this is correct
Prometheus defaults to port 9090.
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.