KCNA Cloud Native Application Delivery Practice Question
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.
A team uses ArgoCD with a Git repository that contains Helm charts. They want ArgoCD to automatically sync when a new image tag is pushed to the container registry. Which approach should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use ArgoCD Image Updater
ArgoCD Image Updater is the official tool to automatically update image tags in Kubernetes manifests (including Helm values) and commit changes to Git, triggering ArgoCD to sync.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use Flux Image Automation Controller
Why it's wrong here
This is a Flux component, not part of ArgoCD. It would require switching to Flux.
✗
Configure a webhook from the registry to ArgoCD API server
Why it's wrong here
Webhooks can trigger sync, but they do not update the image tag in Git.
✗
Manually update the Helm values and commit
Why it's wrong here
While possible, it is not automated.
✓
Use ArgoCD Image Updater
Why this is correct
ArgoCD Image Updater monitors registries and updates the desired state in Git automatically.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this KCNA question in full detail.
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.
Cloud Native Application Delivery — This question tests Cloud Native Application Delivery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use ArgoCD Image Updater — ArgoCD Image Updater is the official tool to automatically update image tags in Kubernetes manifests (including Helm values) and commit changes to Git, triggering ArgoCD to sync.
What should I do if I get this KCNA question wrong?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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