200-901 Application Deployment and Security Practice Question
A developer uses Kubernetes and wants to expose a deployment named 'web-app' externally via a cloud load balancer. Which Service type should be used?
⚠ Common exam trap
Cisco often tests the misconception that NodePort alone provides external cloud load balancing, but NodePort only exposes the service on node IPs without cloud integration, requiring additional infrastructure for true load balancing.
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
The LoadBalancer Service type provisions an external cloud load balancer (e.g., AWS ELB, GCP TCP/UDP Load Balancer) that routes external traffic to the 'web-app' deployment's pods. This is the only Service type that directly integrates with a cloud provider's load balancing infrastructure to expose the service externally.
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
Incorrect. ClusterIP is internal only.
- ✗
ExternalName
Why it's wrong here
Incorrect. ExternalName maps to a DNS name, not a load balancer.
- ✗
NodePort
Why it's wrong here
Incorrect. NodePort exposes on each node's IP, not a cloud LB.
- ✓
LoadBalancer
Why this is correct
Correct. LoadBalancer creates an external load balancer.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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