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.
Which THREE of the following are valid ways to expose a set of pods as a network service in Kubernetes?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Creating a Service of type NodePort.
A Service of type NodeType exposes the pods on a static port on each node's IP address, making the service accessible externally. This is a valid method for exposing a set of pods as a network service in Kubernetes.
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.
✓
Creating a Service of type NodePort.
Why this is correct
Correct; NodePort exposes on a static port on each node.
Related concept
Read the scenario before looking for a memorised answer.
✗
Creating a headless Service (clusterIP: None).
Why it's wrong here
Incorrect; headless services do not provide a single stable IP or load balancing.
✓
Creating an Ingress resource.
Why this is correct
Correct; Ingress provides HTTP/HTTPS routing to Services.
Related concept
Read the scenario before looking for a memorised answer.
✗
Creating a Deployment with a label selector.
Why it's wrong here
Incorrect; Deployment manages pods, not networking.
✓
Creating a Service of type ClusterIP.
Why this is correct
Correct; ClusterIP provides a stable internal IP.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between workload resources (like Deployments) and networking resources (like Services and Ingresses), leading candidates to mistakenly think a Deployment alone can expose pods as a network service.
Detailed technical explanation
How to think about this question
A Service of type NodePort allocates a port from the --service-node-port-range (default 30000-32767) on every node, and traffic to that port is forwarded to the Service's ClusterIP and then to the pods via kube-proxy. Ingress operates at Layer 7, providing HTTP/HTTPS routing rules to Services, but it requires an Ingress controller to be deployed in the cluster. ClusterIP Services are only reachable within the cluster, making them valid for internal exposure but not external access without additional components.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this KCNA question in full detail.
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: Creating a Service of type NodePort. — A Service of type NodeType exposes the pods on a static port on each node's IP address, making the service accessible externally. This is a valid method for exposing a set of pods as a network service in Kubernetes.
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.
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Question Discussion
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