KCNA Kubernetes Fundamentals Practice Question
Which three of the following are valid methods to expose a Service to external traffic? (Select THREE)
⚠ Common exam trap
A common misconception is that ClusterIP can be used for external access because it has an IP address, but it is strictly internal unless combined with a proxy or port-forwarding mechanism.
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
✓
Ingress
Ingress is correct because it provides HTTP/HTTPS routing rules to expose services externally, typically using a reverse proxy like NGINX or HAProxy. It operates at Layer 7 and can route traffic based on hostnames or paths to different services within the cluster, making it a valid method for external exposure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Ingress
Why this is correct
Ingress provides HTTP/HTTPS routing to Services.
- ✓
NodePort
Why this is correct
Exposes on each node's IP at a static port.
- ✓
LoadBalancer
Why this is correct
Provisions an external load balancer.
- ✗
ClusterIP
Why it's wrong here
ClusterIP is internal only.
- ✗
ExternalName
Why it's wrong here
ExternalName maps to an external DNS name, not an exposure method.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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