KCNA Cloud Native Application Delivery Practice Question
In a GitOps workflow, a team uses ArgoCD. A developer manually changes a Deployment's replica count in the cluster via kubectl. ArgoCD has self-healing enabled. What will happen?
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
✓
ArgoCD reverts the replica count to the value in Git
With self-healing enabled, ArgoCD continuously monitors the cluster for drift. When a manual change is made via kubectl, ArgoCD detects that the live state no longer matches the desired state defined in Git. It then automatically reverts the change to bring the cluster back into sync with the Git repository.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ArgoCD creates a new Deployment with the manual change
Why it's wrong here
ArgoCD manages the existing Application; it does not create new resources for drift.
- ✗
ArgoCD updates the Git repository to reflect the manual change
Why it's wrong here
ArgoCD does not write back to Git; it only syncs from Git to cluster.
- ✗
ArgoCD ignores the change because it was made manually
Why it's wrong here
Self-healing actively corrects drift, it does not ignore it.
- ✓
ArgoCD reverts the replica count to the value in Git
Why this is correct
Self-healing ensures the cluster state matches Git, so it undoes the manual change.
Go deeper
Related to this question
Learn chapter
Cluster Architecture and Lifecycle Management
Key term
GitOps
GitOps is a way to manage and automate cloud infrastructure and applications by using a Git repository as the single source of truth, where all changes are made through pull requests and automatically applied by a software agent.
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Same concept, more angles
1 more way this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. In GitOps with ArgoCD, what does 'self-healing' refer to?
easy- A.Automatically scaling applications based on metrics
- B.Automatically restarting failed pods
- ✓ C.Automatically reverting manual changes to match the Git repository
- D.Automatically updating the Git repository when changes are made in the cluster
Why C: Self-healing automatically reverts any manual changes made to the live cluster state back to the desired state defined in Git, ensuring configuration drift is corrected.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.