KCNA Kubernetes Fundamentals Practice Question
Which three of the following are valid ways to interact with the Kubernetes API? (Select THREE.)
⚠ Common exam trap
A common pitfall is confusing cluster management tools (like kubeadm) with API interaction tools. kubeadm is used for bootstrapping and managing Kubernetes clusters, not for querying or modifying cluster resources via the API.
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
✓
Using a Kubernetes client library (e.g., client-go)
Client-go is an official Kubernetes client library that provides Go developers with programmatic access to the Kubernetes API. It handles authentication, serialization, and API version negotiation, allowing applications to create, read, update, and delete Kubernetes resources directly via the API server.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Using a Kubernetes client library (e.g., client-go)
Why this is correct
Client libraries wrap API calls.
- ✗
Using the 'kubeadm' command
Why it's wrong here
kubeadm is a bootstrapping tool, not for day-to-day API interaction.
- ✗
Using the Docker CLI
Why it's wrong here
Docker CLI interacts with Docker, not Kubernetes directly.
- ✓
Using kubectl command-line tool
Why this is correct
kubectl communicates with the API server.
- ✓
Direct HTTP requests to the API server using tools like curl
Why this is correct
The API server exposes a REST API that can be called directly.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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