- A
Service (ClusterIP)
A Service provides a stable IP and load-balances traffic to pods.
- B
Ingress
Why wrong: Ingress is for external HTTP/HTTPS traffic, not internal cluster access.
- C
Deployment
Why wrong: A Deployment manages pods but does not provide a stable endpoint.
- D
Pod
Why wrong: A Pod does not have a stable IP if it is replaced.
Question 82 of 997
Kubernetes ClusterIP Service
This KCNA practice question tests your understanding of kubernetes fundamentals. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You want to expose a set of pods running a web application on port 80 internally within the cluster, with a stable IP address, so that other services can reach them. Which Kubernetes resource should you create?
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 (ClusterIP)
A Service of type ClusterIP provides a stable virtual IP address and DNS name that load-balances traffic to a set of pods. Since the requirement is internal cluster access with a stable IP, ClusterIP is the correct choice — it exposes the pods on a cluster-internal IP that other services can reach reliably, without needing external exposure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Service (ClusterIP)
Why this is correct
A Service provides a stable IP and load-balances traffic to pods.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Ingress
Why it's wrong here
Ingress is for external HTTP/HTTPS traffic, not internal cluster access.
- ✗
Deployment
Why it's wrong here
A Deployment manages pods but does not provide a stable endpoint.
- ✗
Pod
Why it's wrong here
A Pod does not have a stable IP if it is replaced.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Ingress with internal service exposure, thinking it provides a stable internal IP, when in fact Ingress only handles external routing and requires a Service underneath.
Detailed technical explanation
How to think about this question
A ClusterIP Service creates a virtual IP (VIP) backed by iptables or IPVS rules on each node, which load-balances traffic to the pod endpoints via kube-proxy. The stable IP is tied to the Service’s lifecycle, not the pods, so even if pods are recreated, the Service IP remains constant. In real-world scenarios, this is essential for service discovery within the cluster — other services can use the Service’s DNS name (e.g., my-svc.namespace.svc.cluster.local) for reliable communication.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the KCNA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Kubernetes Fundamentals — study guide chapter
Learn the concepts, then practise the questions
- →
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Targeted practice on this topic area only
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FAQ
Questions learners often ask
What does this KCNA question test?
Kubernetes Fundamentals — This question tests Kubernetes Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Service (ClusterIP) — A Service of type ClusterIP provides a stable virtual IP address and DNS name that load-balances traffic to a set of pods. Since the requirement is internal cluster access with a stable IP, ClusterIP is the correct choice — it exposes the pods on a cluster-internal IP that other services can reach reliably, without needing external exposure.
What should I do if I get this KCNA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
2 more ways this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A team runs a stateless web application in Kubernetes. They have a Deployment named 'web-app' with 5 replicas. They want to ensure that a Service named 'web-svc' distributes traffic evenly to all healthy pods. Which type of Service should they use?
medium- ✓ A.ClusterIP
- B.Headless Service
- C.ExternalName Service
- D.NodePort
Why A: A ClusterIP Service is the correct choice because it provides a stable virtual IP address and round-robin load balancing across healthy pods in the Deployment. By default, kube-proxy uses iptables or IPVS rules to distribute traffic evenly to all ready pod endpoints, ensuring stateless web application requests are balanced without requiring external exposure.
Variation 2. A developer wants to expose a set of pods running a web application internally within the cluster using a stable IP address. Which Kubernetes resource should they create?
medium- A.Ingress
- B.ConfigMap
- C.Deployment
- ✓ D.Service
Why D: A Service of type ClusterIP provides a stable virtual IP address and DNS name that load-balances traffic to a set of pods, making it the correct resource for internal cluster exposure. Unlike other resources, a Service abstracts the pod IPs and ensures connectivity even if pods are rescheduled or scaled.
Keep practising
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Last reviewed: Jul 4, 2026
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.
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