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.
Which of the following is a recommended practice when securing the Kubernetes Dashboard?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Access the Dashboard using 'kubectl proxy' and never expose it publicly.
Accessing the Kubernetes Dashboard via 'kubectl proxy' is recommended because it creates a local HTTP proxy between your workstation and the API server, ensuring the Dashboard is never exposed to external networks. This approach leverages the API server's authentication and authorization mechanisms, avoiding the need to open network ports or expose the Dashboard directly, which aligns with the principle of least privilege and reduces 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.
✓
Access the Dashboard using 'kubectl proxy' and never expose it publicly.
Why this is correct
kubectl proxy provides a secure way to access the Dashboard without exposing it to the network.
Related concept
Read the scenario before looking for a memorised answer.
✗
Expose the Dashboard via a LoadBalancer service for easy access.
Why it's wrong here
Public exposure is not recommended; it increases the attack surface.
✗
Disable authentication for the Dashboard to simplify access.
Why it's wrong here
Disabling authentication would allow anyone to access the Dashboard.
✗
Grant the Dashboard service account cluster-admin permissions.
Why it's wrong here
This violates least-privilege and could lead to privilege escalation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume exposing the Dashboard via a LoadBalancer or NodePort is acceptable for convenience, but Cisco tests the understanding that the Dashboard must never be publicly accessible and should only be accessed through the API server proxy to enforce authentication and authorization.
Detailed technical explanation
How to think about this question
The 'kubectl proxy' command binds to localhost (127.0.0.1) by default and uses the API server's authentication (e.g., TLS client certificates, bearer tokens) to proxy requests to the Dashboard. Under the hood, it creates an HTTP tunnel that validates each request against the user's kubeconfig credentials, ensuring that only authenticated users with appropriate RBAC permissions can access the Dashboard. In a real-world scenario, if the Dashboard is exposed via a NodePort or LoadBalancer, it bypasses the API server's authentication layer, making it vulnerable to attacks such as CSRF or direct exploitation of Dashboard vulnerabilities like CVE-2018-18264.
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 the Dashboard using 'kubectl proxy' and never expose it publicly. — Accessing the Kubernetes Dashboard via 'kubectl proxy' is recommended because it creates a local HTTP proxy between your workstation and the API server, ensuring the Dashboard is never exposed to external networks. This approach leverages the API server's authentication and authorization mechanisms, avoiding the need to open network ports or expose the Dashboard directly, which aligns with the principle of least privilege and reduces 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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