KCNA Kubernetes Fundamentals Practice Question
Which two of the following are valid ways to expose a Deployment externally to the internet? (Select TWO)
⚠ Common exam trap
Candidates often confuse Ingress as a standalone external exposure method, forgetting that Ingress requires a backing Service (typically NodePort or LoadBalancer) to actually route traffic from the internet.
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
✓
Create a Service of type LoadBalancer
A Service of type LoadBalancer provisions an external load balancer (e.g., in cloud environments like AWS, GCP, or Azure) that assigns a public IP or DNS name, making the Deployment directly accessible from the internet. This is a standard method for exposing services externally in Kubernetes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a Service of type ClusterIP
Why it's wrong here
ClusterIP is only reachable within the cluster.
- ✗
Create an Ingress resource
Why it's wrong here
Ingress provides HTTP routing but does not expose a Service directly; it requires a Service of type NodePort or LoadBalancer to route traffic.
- ✓
Create a Service of type LoadBalancer
Why this is correct
LoadBalancer provisions an external load balancer and assigns a public IP.
- ✗
Create a Headless Service
Why it's wrong here
Headless Services are for service discovery without a single VIP, not for external exposure.
- ✓
Create a Service of type NodePort
Why this is correct
A NodePort Service opens a static port on every cluster node’s IP address, routing external traffic from that port to the target Deployment’s Pods. This satisfies the requirement of exposing the Deployment externally to the internet because the node’s public IP combined with the allocated NodePort becomes an accessible endpoint, albeit without cloud load-balancer integration.
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