200-901 Application Deployment and Security Practice Question
In a Kubernetes cluster, you need to expose a set of pods running a web application to external traffic on a specific port. Which Service type should you use to provide a stable external IP address?
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 provisions a cloud load balancer and assigns a stable external IP, making the service accessible from outside the cluster.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ClusterIP
Why it's wrong here
ClusterIP assigns only a cluster-internal virtual IP, unreachable from outside the cluster, so it cannot supply the required external address. It is the default Service type for pod-to-pod communication inside the cluster, and would be right for internal-only backends; external exposure needs LoadBalancer or NodePort.
- ✓
LoadBalancer
Why this is correct
LoadBalancer provisions an external load balancer through the cloud provider, assigning a stable public IP that routes to the pods on your chosen port. This satisfies the stem's requirement for external traffic on a specific port, unlike ClusterIP (internal only) or NodePort (no stable external IP).
- ✗
NodePort
Why it's wrong here
NodePort exposes the service on each node's IP at a static port in the 30000–32767 range, so the address depends on the node rather than providing a stable external IP. It is tempting for quick external access in development or when no cloud load balancer is available, but production stable addressing requires LoadBalancer.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.