KCNA Kubernetes Fundamentals Practice Question
Which Kubernetes resource provides a stable IP address and DNS name to access a set of pods?
⚠ Common exam trap
Many exam-takers confuse Ingress (which provides external access) with the internal stable IP/DNS abstraction provided by a Service, or they mistakenly think EndpointSlice (a newer, more scalable replacement for Endpoints) is the resource that offers a stable network identity.
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
✓
Service
A Kubernetes Service provides a stable virtual IP address and a DNS name (e.g., my-svc.namespace.svc.cluster.local) that remains constant even as the underlying pods are created, destroyed, or scaled. This abstraction allows clients to reliably reach a set of pods without needing to track individual pod IPs, which are ephemeral. Services use label selectors to dynamically route traffic to matching pods, ensuring high availability and load balancing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ingress
Why it's wrong here
Ingress manages external access to services, typically HTTP.
- ✗
EndpointSlice
Why it's wrong here
EndpointSlice tracks network endpoints of Services, but is not the stable endpoint itself.
- ✓
Service
Why this is correct
A Service provides a stable IP and DNS name to reach a group of pods.
- ✗
NetworkPolicy
Why it's wrong here
NetworkPolicy controls traffic flow, not service discovery.
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.
About these practice questions
Courseiva writes every KCNA question from scratch — 833 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.