This KCNA practice question tests your understanding of cloud native application delivery. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE of the following are core components of Flux?
Source controller
Manages sources like Git repositories and OCI artifacts.
Notification controller
Why wrong: While Flux has a notification-controller, it is not considered a core component; it is an optional add-on for sending notifications.
GitOps controller
Why wrong: There is no specific component named 'GitOps controller' in Flux.
Kustomize controller
Applies Kustomization resources to the cluster.
Helm controller
Manages Helm releases.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Source controller
Flux has a source-controller that manages artifact sources (e.g., Git repositories), a kustomize-controller that applies Kustomize overlays, and a helm-controller for Helm releases. The gitops-controller is not a specific Flux component (it's a generic term), and the notification-controller is not a core component (it's a separate controller for events).
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Source controller
Why this is correct
Manages sources like Git repositories and OCI artifacts.
Related concept
Read the scenario before looking for a memorised answer.
Notification controller
Why it's wrong here
While Flux has a notification-controller, it is not considered a core component; it is an optional add-on for sending notifications.
GitOps controller
Why it's wrong here
There is no specific component named 'GitOps controller' in Flux.
Kustomize controller
Why this is correct
Applies Kustomization resources to the cluster.
Related concept
Read the scenario before looking for a memorised answer.
Helm controller
Why this is correct
Manages Helm releases.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the KCNA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Cloud Native Application Delivery — This question tests Cloud Native Application Delivery — Read the scenario before looking for a memorised answer..
The correct answer is: Source controller — Flux has a source-controller that manages artifact sources (e.g., Git repositories), a kustomize-controller that applies Kustomize overlays, and a helm-controller for Helm releases. The gitops-controller is not a specific Flux component (it's a generic term), and the notification-controller is not a core component (it's a separate controller for events).
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.
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