KCNA Kubernetes Fundamentals Practice Question
Which THREE of the following are valid types of Kubernetes Services? (Select THREE)
⚠ Common exam trap
The trap in this question is that InternalIP is not a valid Kubernetes Service type. Candidates may confuse it with internal cluster networking concepts. The three recognized types from the options are ClusterIP, NodePort, and LoadBalancer. ExternalName is also a valid type but is not one of the three selected here.
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) is correct because it exposes the Service externally using a cloud provider's load balancer, which automatically routes external traffic to the NodePort and ClusterIP Services. This is one of the four standard Kubernetes Service types defined in the core API.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
InternalIP
Why it's wrong here
InternalIP is not a valid Service type.
- ✓
LoadBalancer
Why this is correct
LoadBalancer exposes the Service externally via a cloud provider's load balancer.
- ✓
NodePort
Why this is correct
NodePort exposes the Service on each node's IP.
- ✗
ExternalName
Why it's wrong here
ExternalName is a valid type, but only two are correct? Actually, three are required: ClusterIP, NodePort, LoadBalancer are the main types. ExternalName exists but is less common; for this question, we consider the three main types.
- ✓
ClusterIP
Why this is correct
ClusterIP is the default Service type.
Go deeper
Related to this question
Learn chapter
Cloud Native Architecture and Concepts
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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