This CKS practice question tests your understanding of cluster setup and hardening. 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 deploy the Kubernetes Dashboard using the official YAML manifests. Which of the following is the MOST secure approach to expose the Dashboard?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use 'kubectl proxy' to access it locally
The most secure approach is to use 'kubectl proxy' because it creates a local HTTP proxy between your workstation and the Kubernetes API server, authenticating your requests using your kubeconfig credentials. This ensures the Dashboard is never exposed to the network, eliminating any attack surface from external or internal cluster access. All traffic is tunneled through the API server, which enforces RBAC and audit logging.
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.
✓
Use 'kubectl proxy' to access it locally
Why this is correct
This method uses your existing kubectl authentication and does not expose the Dashboard to the network.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a NodePort Service to expose it on a port
Why it's wrong here
NodePort exposes the Dashboard on every node's IP, which is not secure.
✗
Expose it with a LoadBalancer Service
Why it's wrong here
LoadBalancer creates a public endpoint, which is insecure for the Dashboard.
✗
Use an Ingress with a public DNS
Why it's wrong here
Exposing via Ingress to the internet is risky without additional authentication.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the misconception that exposing the Dashboard via a Service (NodePort, LoadBalancer, or Ingress) is acceptable if TLS is enabled, but the trap is that any network exposure increases the attack surface and violates the principle of least privilege, whereas 'kubectl proxy' provides no network exposure at all.
Detailed technical explanation
How to think about this question
Under the hood, 'kubectl proxy' binds to localhost (127.0.0.1) by default and forwards requests to the API server, which then proxies to the Dashboard Service using the service proxy endpoint (/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/). This approach leverages the API server's built-in authentication and authorization, so the Dashboard inherits the user's RBAC permissions. In a real-world scenario, this is ideal for admin troubleshooting or development, but for production, a more secure alternative is to use a reverse proxy with mutual TLS and OIDC, though 'kubectl proxy' remains the simplest zero-exposure method.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKS question in full detail.
Cluster Setup and Hardening — This question tests Cluster Setup and Hardening — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use 'kubectl proxy' to access it locally — The most secure approach is to use 'kubectl proxy' because it creates a local HTTP proxy between your workstation and the Kubernetes API server, authenticating your requests using your kubeconfig credentials. This ensures the Dashboard is never exposed to the network, eliminating any attack surface from external or internal cluster access. All traffic is tunneled through the API server, which enforces RBAC and audit logging.
What should I do if I get this CKS 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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