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Certified Kubernetes Security Specialist (CKS) - Practice Exam Part 4

This lab provides practice scenarios to help prepare you for the Certified Kubernetes Security Specialist (CKS) exam. You will be presented with tasks to complete, as well as server(s) and/or an existing Kubernetes cluster to complete them in. You will need to use your knowledge of Kubernetes to successfully complete the provided tasks, much like you would on the real CKS exam. Good luck!

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Last updated
Clock icon Sep 03, 2025

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Table of Contents

  1. Challenge

    Configure Admission Control

    The cluster needs to be configured to scan incoming container images before running workloads. An image scanning service is already set up.

    Modify the admission control configuration so that it will implicitly deny images, even if the image scanning service is unreachable. The global admission control configuration is at /etc/kubernetes/admission-control/admission-control.conf, and the specific configuration for the admission controller is at /etc/kubernetes/admission-control/imagepolicy.conf.

  2. Challenge

    Set the URL of the Image Scanning Service

    Add the URL of the image scanning service to the kubeconfig used by the admission controller.

    The service can be reached at https://acg.trivy.k8s.webhook:8090/scan.

  3. Challenge

    Enable the Admission Control Plugin(s)

    In the kube-apiserver manifest, enable any admission control plugin(s) necessary to scan images.

    There are two Pod manifests in /home/cloud_user on the CLI server. If your setup is working, no-vulns-pod.yml should pass image validation, while vulns-pod.yml should fail due to vulnerabilities.

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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

Did you know?

On average, you retain 75% more of your learning if you get time for practice.
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