KCNA Cloud Native Application Delivery Practice Question
A development team wants to implement GitOps for their Kubernetes deployments using ArgoCD. Which ArgoCD component is responsible for monitoring the Git repository for changes and syncing the desired state to the cluster?
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
✓
Application Controller
The Application Controller in ArgoCD is the component that continuously monitors the Git repository and compares the desired state (in Git) with the live state (in the cluster). It triggers sync operations when differences are detected.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Repo Server
Why it's wrong here
The Repo Server is responsible for cloning, caching, and generating manifests (e.g., using Helm or Kustomize), but it does not perform the sync.
- ✗
API Server
Why it's wrong here
The API Server is the frontend exposing the ArgoCD API and UI, but it does not perform the sync operations.
- ✓
Application Controller
Why this is correct
The Application Controller is the core component that monitors Git repositories and syncs applications to match the desired state.
- ✗
Redis Server
Why it's wrong here
Redis is used as a cache for the ArgoCD components, not for monitoring or syncing.
Go deeper
Related to this question
Learn chapter
Kubernetes Overview and Core Components
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.
Key term
ReplicaSet and Replication
A ReplicaSet ensures a specified number of identical pod instances are running at all times in Kubernetes, using replication to maintain availability and stability.
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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.