KCNA Container Orchestration Practice Question
Which TWO of the following are valid methods to expose a set of pods to external traffic in Kubernetes?
⚠ Common exam trap
The KCNA exam often tests the distinction between 'exposing pods' and 'routing traffic' — the trap here is that candidates mistakenly select Ingress as a direct exposure method, when in fact Ingress only defines routing rules and relies on a Service (like NodePort or LoadBalancer) to actually make pods reachable from outside the cluster.
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 Service
A LoadBalancer Service is a valid method to expose pods to external traffic because it provisions an external load balancer (e.g., AWS ELB, GCP LB) that assigns a public IP address, routing external traffic to the Service's ClusterIP and then to the pods. This is a standard Kubernetes Service type defined in the ServiceSpec, making it correct 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.
- ✓
LoadBalancer Service
Why this is correct
Provisions an external load balancer.
- ✓
NodePort Service
Why this is correct
Exposes a static port on each node.
- ✗
Headless Service
Why it's wrong here
Headless Service is for internal discovery, no external exposure.
- ✗
ClusterIP Service
Why it's wrong here
ClusterIP is internal only.
- ✗
Ingress
Why it's wrong here
Ingress is not a Service type; it's a separate resource.
Go deeper
Related to this question
Learn chapter
Kubernetes Overview and Core Components
Key term
Kubernetes API Primitives
Kubernetes API Primitives are the basic building blocks that the Kubernetes API uses to represent and manage the state of a cluster, such as Pods, Services, Deployments, and Namespaces.
Key term
ReplicaSet and Replication
A ReplicaSet ensures a specified number of identical pod instances are running at all times in Kubernetes, using replication to maintain availability and stability.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.