This KCNA practice question tests your understanding of container orchestration. 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 TWO 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
✓
Service of type NodePort
A Service of type NodePort exposes a set of pods on a static port on each node's IP address, making the service accessible from outside the cluster. This is a valid Kubernetes resource for exposing pods as a network service, as it creates a mapping from a node port to the ClusterIP and then to the target pods.
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 of type NodePort
Why this is correct
NodePort exposes the service on each node's IP at a static port.
Related concept
Read the scenario before looking for a memorised answer.
✗
NetworkPolicy
Why it's wrong here
NetworkPolicy controls traffic, does not expose services.
✓
Service of type ClusterIP
Why this is correct
ClusterIP exposes the service on a cluster-internal IP.
Related concept
Read the scenario before looking for a memorised answer.
✗
Ingress resource
Why it's wrong here
Ingress provides HTTP routing, not a direct service endpoint for protocols other than HTTP.
✗
Deployment with replicas
Why it's wrong here
Deployment does not expose a network endpoint.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Ingress or NetworkPolicy can directly expose pods as a network service, but Ingress requires a Service backend and NetworkPolicy only controls traffic, not exposure.
Detailed technical explanation
How to think about this question
A Service of type ClusterIP creates a virtual IP (VIP) within the cluster's service CIDR, which is reachable only from inside the cluster via kube-proxy's iptables or IPVS rules. NodePort builds on ClusterIP by additionally opening a high port (30000-32767 by default) on every node, with traffic forwarded to the ClusterIP. In real-world scenarios, NodePort is often used for development or when a cloud load balancer is not available, but it can expose ports directly to the network without additional infrastructure.
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.
Container Orchestration — This question tests Container Orchestration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Service of type NodePort — A Service of type NodePort exposes a set of pods on a static port on each node's IP address, making the service accessible from outside the cluster. This is a valid Kubernetes resource for exposing pods as a network service, as it creates a mapping from a node port to the ClusterIP and then to the target pods.
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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