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.
The Kubernetes Dashboard is deployed in the cluster. To secure it, which of the following is a recommended practice?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Access it via kubectl proxy
Accessing the Kubernetes Dashboard via `kubectl proxy` is recommended because it creates an authenticated HTTP proxy between your local machine and the Kubernetes API server. This ensures that all traffic to the Dashboard is tunneled through the API server's authentication and authorization mechanisms, preventing direct exposure of the Dashboard to the network and reducing the attack surface.
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.
✗
Create a NodePort service to access it externally
Why it's wrong here
NodePort exposes the service on all node IPs, which is not recommended.
✓
Access it via kubectl proxy
Why this is correct
kubectl proxy provides a secure way to access the Dashboard locally with proper authentication.
Related concept
Read the scenario before looking for a memorised answer.
Expose it using a LoadBalancer service for easy access
Why it's wrong here
Public exposure is not recommended without additional authentication, but kubectl proxy is the standard secure method.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the misconception that exposing the Dashboard via a NodePort or LoadBalancer is acceptable for convenience, but the trap is that these methods bypass the API server's authentication layer, which is a fundamental security requirement for the Dashboard.
Detailed technical explanation
How to think about this question
`kubectl proxy` binds to localhost (127.0.0.1) by default and uses the kubeconfig's authentication tokens to authenticate each request to the API server, which then proxies to the Dashboard's ClusterIP service. This ensures that the Dashboard is never directly accessible from the network; only the API server's RBAC policies govern access. In a real-world scenario, this is critical for compliance with standards like CIS Kubernetes Benchmark, which explicitly recommends against exposing the Dashboard via NodePort or LoadBalancer.
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 junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
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: Access it via kubectl proxy — Accessing the Kubernetes Dashboard via `kubectl proxy` is recommended because it creates an authenticated HTTP proxy between your local machine and the Kubernetes API server. This ensures that all traffic to the Dashboard is tunneled through the API server's authentication and authorization mechanisms, preventing direct exposure of the Dashboard to the network and reducing the attack surface.
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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