[NEW] CKAD Certified Kubernetes Application Developer

Detailed Exam Domain CoverageThe Certified Kubernetes Application Developer (CKAD) is an intermediate-level, performance-based exam offered by the Cloud Native Computing Foundation (CNCF). It assesses your ability to design, build, configure, and expose cloud-native applications on Kubernetes using the command line. The exam is taken online, proctored remotely, and is open-book. I have structured this practice material to comprehensively cover all exam domains so you can test your knowledge effectively.Application Design and Build (20%)Application Deployment (20%)Application Observability and Maintenance (15%)Application Environment, Configuration and Security (25%)Services and Networking (20%)Mastering the command line and understanding how to troubleshoot live clusters is critical. I created these practice tests to simulate the pressure and technical depth of the actual exam, ensuring you are fully prepared to pass on your first attempt.Sample Practice Questions PreviewHere is a preview of the types of questions you will find in this course.Question 1: Application Observability and MaintenanceYou have a pod named 'web-app' running in the 'production' namespace that is continually crashing. You need to check the logs of the previous instance of the container named 'nginx-container' within this pod to determine the root cause. Which command should you use?Option A: kubectl logs web-app -c nginx-container -n productionOption B: kubectl logs web-app -c nginx-container -p -n productionOption C: kubectl logs -p web-app -n productionOption D: kubectl describe pod web-app -n productionOption E: kubectl get logs web-app -c nginx-container --previous -n productionOption F: kubectl logs pod/web-app --previous -n productionCorrect Answer: Option BOverall Explanation: When troubleshooting a crashing pod, examining the logs of the previously terminated container instance is essential. The -p or --previous flag in the kubectl logs command allows you to view the logs for the crashed instance. You must also specify the exact container name using -c if there are multiple containers, and pass the correct namespace using -n.Why Option A is incorrect: It fetches the logs of the currently running container, not the previous crashed instance.Why Option B is correct: It correctly includes the pod name, the specific container name (-c), the previous flag (-p), and the correct namespace (-n).Why Option C is incorrect: It omits the container name. If the pod has multiple containers, this command will fail and prompt you to specify a container.Why Option D is incorrect: The describe command provides events and resource configuration details, not the standard output logs of the application.Why Option E is incorrect: kubectl get logs is invalid syntax. The correct verb is kubectl logs.Why Option F is incorrect: It lacks the -c flag to specify the exact container name, which is required if the pod contains sidecars or init containers.Question 2: Application Design and BuildYou are tasked with creating a Kubernetes Job named 'batch-job' that must run a specific container image and guarantee that exactly 5 completions are successful, with no more than 2 pods running in parallel. Which configuration parameters must be set in the Job spec?Option A: completions: 5, parallelism: 2Option B: completions: 2, parallelism: 5Option C: replicas: 5, maxSurge: 2Option D: parallel: 2, successfulJobs: 5Option E: completions: 5, activeDeadlineSeconds: 2Option F: backoffLimit: 2, completions: 5Correct Answer: Option AOverall Explanation: In Kubernetes, a Job creates one or more Pods and ensures that a specified number of them successfully terminate. The completions field specifies the target number of successful pod completions. The parallelism field limits how many pods can run concurrently.Why Option A is correct: It accurately assigns 5 to completions and 2 to parallelism, fulfilling all the requirements of the prompt.Why Option B is incorrect: It reverses the requirements, setting it to 2 completions and 5 parallel pods.Why Option C is incorrect: replicas and maxSurge are properties of a Deployment, not a Job.Why Option D is incorrect: parallel and successfulJobs are not valid fields in the Kubernetes Job API specification.Why Option E is incorrect: activeDeadlineSeconds determines the maximum duration the Job can be active, which does not address the parallel execution requirement.Why Option F is incorrect: backoffLimit specifies the number of retries before marking the job as failed, which is irrelevant to the parallelism requirement.Question 3: Application DeploymentYou have updated the image of a Deployment named 'frontend' from version v1 to v2. You notice the new pods are crash-looping, and you want to revert the Deployment to the previous working state immediately. Which command accomplishes this?Option A: kubectl rollout restart deployment frontendOption B: kubectl scale deployment frontend --replicas=0Option C: kubectl set image deployment/frontend nginx=nginx:v1Option D: kubectl rollout undo deployment frontendOption E: kubectl deployment rollback frontendOption F: kubectl revert deployment frontend --to-revision=1Correct Answer: Option DOverall Explanation: Kubernetes Deployments keep a history of rollouts. If a new rollout introduces a bug or crash loop, the fastest and most standard way to restore service is to undo the rollout, which restores the Deployment's PodTemplate to its previous revision.Why Option A is incorrect: This will force a restart of the pods using the current, broken configuration (v2 image), failing to fix the issue.Why Option B is incorrect: Scaling to zero stops the application entirely, resulting in downtime rather than reverting to a working state.Why Option C is incorrect: While this manually changes the image back, it creates a brand new rollout revision rather than utilizing the built-in rollback history mechanism.Why Option D is correct: The kubectl rollout undo command is the standard and most efficient way to revert a Deployment to its immediately previous revision.Why Option E is incorrect: This is not a valid Kubernetes command.Why Option F is incorrect: kubectl revert does not exist in the standard Kubernetes CLI toolset.Welcome to the Mock Exam Practice Tests Academy to help you prepare for your CKAD: Certified Kubernetes Application DeveloperYou can retake the exams as many times as you wantThis is a huge original question bankYou get support from instructors if you have questionsEach question has a detailed explanationMobile-compatible with the Udemy appI hope that by now you're convinced! And there are a lot more questions inside the course.