KCSA Platform Security Practice Question
Your team is implementing image caching and proxying to protect against external container registry rate limits and security incidents. Which upstream project acts as a CNCF-compliant registry proxy and caching mechanism?
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
✓
Harbor
Harbor is an open-source, CNCF-graded cloud-native registry that stores, signs, and scans content with vulnerability management and proxy caching features.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Harbor
Why this is correct
Harbor is a CNCF artifact registry that provides security features like vulnerability scanning, signing, and proxy caching.
- ✗
Fluentd
Why it's wrong here
Fluentd is a log collector for unified logging layers.
- ✗
Jaeger
Why it's wrong here
Jaeger is a distributed tracing system for microservices.
- ✗
Prometheus
Why it's wrong here
Prometheus is a monitoring and alerting toolkit, not a container registry.
About these practice questions
One of 320 original KCSA 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 KCSA 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 KCSA exam.