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Exam CKS Topic 1 Question 57 Discussion

Actual exam question for Linux Foundation's CKS exam
Question #: 57
Topic #: 1
You are running a Kubernetes cluster with several sensitive applications. You need to restrict access to the cluster from external sources to only the IP addresses of your development team's laptops. HOW can you implement this using Network Policies?

Suggested Answer:

Solution (Step by Step) :
1. Define Network Policy: Create a NetworkPolicy YAML file named 'restrict-external-access.yaml

- Replace with the namespace where your sensitive applications are deployed. - Replace with the IP range of your development team's laptops. For example, '192.168.1.0/24' or a specific set of IP addresses. 2. Apply Network Policy: use 'kubectl' to apply the NetworkPolicy to your Kubernetes cluster. bash kubectl apply -f restrict-external-access-yaml 3. Verify Network Policy: Verify the NetworkPolicy is applied correctly: bash kubectl get networkpolicies -n You should see the 'restrict-external-access NetworkPolicy listed. 4. Test Access: Try accessing the cluster from an external IP address outside of the defined range. You should be blocked. Access from within the defined IP range should be allowed. This NetworkP01icy restricts ingress traffic to pods Within the specified namespace. It allows connections from the specified IP range C') and blocks all other external connections. Important Note: Ensure your firewall and other network security measures are properly configured to work in conjunction with the NetworkPolicy.

by Mark at Jul 02, 2026, 10:04 AM

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Here are all the actual test exam dumps for IT exams. Most people prepare for the actual exams with our test dumps to pass their exams. So it's critical to choose and actual test pdf to succeed.

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