XK0-006 Automation, Orchestration, and Scripting Practice Question
A Kubernetes administrator needs to expose a deployment named 'web-app' running on port 80 internally within the cluster. Which kubectl command creates a service of type ClusterIP that maps port 80 to the target port 8080 on the pods?
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
✓
kubectl expose deployment web-app --port=80 --target-port=8080
To create a ClusterIP service, use 'kubectl expose deployment web-app --port=80 --target-port=8080'. The --type=ClusterIP is default.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
kubectl create service nodeport web-app --tcp=80:8080
Why it's wrong here
This creates a NodePort, not ClusterIP, and uses incorrect syntax.
- ✓
kubectl expose deployment web-app --port=80 --target-port=8080
Why this is correct
Correct. This creates a Service targeting port 80 and forwarding to container port 8080.
- ✗
kubectl expose pod web-app --port=80 --target-port=8080
Why it's wrong here
Exposing a pod directly with `kubectl expose pod` creates a service that routes traffic to that single pod, not to the `web-app` deployment’s replica set. The stem requires exposing a *deployment*, which manages multiple pods and provides load balancing and self-healing; the correct command targets the deployment resource (`kubectl expose deployment web-app ...`). This option is tempting because `kubectl expose pod` works correctly when the goal is to expose a standalone pod that is not managed by a higher-level controller, such as during debugging or testing a single instance.
- ✗
kubectl create service clusterip web-app --tcp=80:8080
Why it's wrong here
The syntax is incorrect; --tcp expects a different format.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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