KCNA Kubernetes Fundamentals Practice Question
Which TWO of the following are valid methods for exposing a Service externally?
⚠ Common exam trap
Test-takers frequently confuse Ingress as a Service type or think ExternalName provides external access, when in fact Ingress is a separate resource and ExternalName is purely a DNS alias with no proxying or port exposure.
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
✓
LoadBalancer
(LoadBalancer) is correct because it provisions an external load balancer (e.g., AWS ELB, GCP TCP LB) that assigns a public IP address to the Service, making it accessible from outside the cluster. Option E (NodePort) is correct because it exposes the Service on a static port (30000–32767) on every Node's IP, allowing external traffic to reach the Service via `<NodeIP>:<NodePort>`. Both are valid Service types in Kubernetes 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.
- ✗
ExternalName
Why it's wrong here
ExternalName maps to a DNS name, not an external endpoint.
- ✗
Ingress
Why it's wrong here
Ingress is not a Service type; it provides HTTP routing to Services.
- ✓
LoadBalancer
Why this is correct
LoadBalancer provisions an external load balancer.
- ✗
ClusterIP
Why it's wrong here
ClusterIP is internal only.
- ✓
NodePort
Why this is correct
NodePort exposes the service on a port on each node's IP.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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