CKAD Sample Questions to Ace the Kubernetes Developer Certification

Enhance your preparation for the Certified Kubernetes Application Developer ( CKAD ) exam with our hand-picked CKAD sample questions. Designed by Kubernetes experts, these questions reflect real exam complexity, focusing on key domains like pod design, configuration, observability, and multi-container pod patterns. Practice with CKAD dumps, mock exams, and exercises that improve speed and accuracy under pressure. Whether you're a DevOps engineer or an aspiring Kubernetes developer, these CKAD practice exams and real-world use cases provide essential knowledge to pass the certification. Build hands-on skills with simulated questions and take your cloud-native career to the next level.

CKAD Sample Questions List :

1. You are managing a Kubernetes cluster where several applications are running. One of your applications, app-A, is experiencing performance issues due to resource contention with other applications. To resolve this, you need to properly set resource requests and limits for app-A. Which of the following steps should you take? Select two correct answers.

1. Set a CPU request and limit for app-A to ensure it gets enough CPU resources.

2. Disable resource limits to allow app-A to use as much CPU and memory as needed.

3. Set a memory request and limit for app-A to ensure it gets enough memory resources.

4. Increase the replica count of app-A to distribute the load.

5. Use kubectl top to monitor resource usage of all pods in the cluster.

2. You are managing a Kubernetes cluster with a microservices-based application. One of the services, inventory-service, is experiencing intermittent issues where pods are terminating unexpectedly. You need to investigate the issue and determine why the pods are failing. Which built-in Kubernetes CLI tool command would you use to gather detailed information about the terminated pods in the inventory-service?

1. kubectl get pod inventory-service -o yaml

2. kubectl logs -l app=inventory-service

3. kubectl describe pod -l app=inventory-service

4. kubectl top pod -l app=inventory-service

3. You are deploying a logging solution for your application running in Kubernetes. The application itself does not handle log aggregation. You decide to use a sidecar container to collect and send the logs to a centralized logging service. Which design pattern is being used when you deploy a logging agent as a separate container within the same Pod as your application?

1. Ambassador Pattern

2. Builder Pattern

3. Sidecar Pattern

4. Init Container Pattern

4. You have deployed a service called my-app-service in your Kubernetes cluster, which is not accessible from outside the cluster. You want to expose this service on port 8080 to the external world. Which configuration should you use to achieve this?

1. Update the Service type to LoadBalancer and set the external port to 8080.

2. Change the Service type to NodePort and expose port 8080.

3. Use a ClusterIP Service type and configure a NetworkPolicy to allow external traffic.

4. Use a headless Service and expose it via a NodePort.

5. You are developing a logging system where logs need to be stored persistently and shared between multiple Pods in a Kubernetes cluster. Which type of volume configuration should you use to achieve this?

1. EmptyDir

2. HostPath

3. ConfigMap

4. PersistentVolumeClaim (PVC) with ReadWriteMany (RWX) access mode

6. You have deployed a web application in a Kubernetes cluster, and you need to ensure that it doesn't consume more resources than allowed. You want to set the resource limits for CPU and memory in the deployment manifest. What should you do?

1. Add limits and requests fields under resources in the container spec.

2. Add limits and requests fields under spec in the deployment manifest.

3. Set resource limits in the service manifest.

4. Use kubectl set resources to define resource limits directly.

7. Which type of probe would you configure in a Kubernetes pod to ensure that a container is ready to start accepting traffic?

1. Startup Probe

2. Liveness Probe

3. Readiness Probe

4. Health Probe

8. You are deploying a web application that requires a primary container to serve HTTP requests and a secondary container to handle log aggregation from the primary container. The secondary container should run alongside the primary container within the same Pod. Which multi-container Pod design pattern should you use?

1. Sidecar

2. Adapter

3. Init Container

4. Ambassador

9. You need to restrict traffic in your Kubernetes cluster so that only pods in the app namespace can communicate with pods in the db namespace on port 5432. Which NetworkPolicy should you apply in the db namespace?

1. A NetworkPolicy that allows all ingress traffic to the db namespace.

2. A NetworkPolicy that allows ingress from the app namespace to the db namespace on port 5432.

3. A NetworkPolicy that allows ingress from the app namespace to the db namespace on all ports.

4. A NetworkPolicy that allows egress from the db namespace to the app namespace on port 5432.

10. You need to prevent any single Pod in a namespace from consuming excessive resources and ensure balanced resource distribution. What Kubernetes object should you configure?

1. Create a ResourceQuota object in the namespace with specified CPU and memory limits.

2. Create a LimitRange object in the namespace to set default CPU and memory requests and limits for Pods.

3. Use a PodDisruptionBudget to control resource usage per Pod.

4. Configure a NetworkPolicy to limit resource usage per Pod.

11. You have a Kubernetes cluster where the application components need to be deployed with specific resource limits and affinity rules to ensure optimal performance. The application consists of a web server, a database, and a cache. The web server should only run on nodes labeled with "type=frontend," and the database should only run on nodes with "type=backend." The cache can run on any node but must always have at least 1 CPU and 2Gi of memory. How would you define the configuration for the web server in this scenario?

1. Use a StatefulSet with nodeSelector for "type=frontend" and specify resource requests and limits.

2. Use a Deployment with nodeSelector for "type=frontend" and specify resource limits in the Pod spec.

3. Use a DaemonSet with nodeSelector for "type=frontend" and specify resource limits in the Pod spec.

4. Use a Job with nodeSelector for "type=frontend" and specify resource requests and limits.

12. You need to deploy a pod that requires elevated privileges to access certain system resources. Which configuration should you add to the pod spec to allow a specific container to run with these elevated privileges?

1. Add runAsUser: 0 in the pod's spec.

2. Set readOnlyRootFilesystem: true in the container's securityContext.

3. Set privileged: true in the container's securityContext.

4. Set allowPrivilegeEscalation: true in the pod's metadata.

13. You need to ensure that your Kubernetes application can handle increased load without causing performance degradation. Which of the following approaches would best help you achieve horizontal scaling of your application?

1. Use a NodePort service to expose your application.

2. Use a Horizontal Pod Autoscaler (HPA).

3. Increase the CPU and memory requests for the pods.

4. Deploy the application using StatefulSets.

14. You are deploying an application in a Kubernetes cluster that requires different configurations for development, staging, and production environments. What is the best practice for managing these environment-specific configurations?

1. Use a single ConfigMap for all environments and switch configurations based on the pod’s label.

2. Store configurations in secrets for each environment.

3. Create separate namespaces for each environment and hard-code configurations in each namespace.

4. Use environment variables defined in the Deployment manifest.

15. In your Kubernetes cluster, multiple teams are deploying applications, and you need to ensure that no single team consumes all the cluster resources. Which combination of Kubernetes features can help you achieve this goal?

1. Use ResourceQuotas and LimitRanges to control the total resource usage and set default resource limits per namespace.

2. Use ConfigMaps to store resource limits and apply them to each pod.

3. Configure HorizontalPodAutoscalers (HPA) to automatically scale pods based on resource usage.

4. Deploy DaemonSets in each namespace to control resource usage and enforce limits.

16. Which Kubernetes resource can be used to implement a canary deployment by incrementally increasing the traffic to the new version of an application?

1. StatefulSet

2. Service

3. Ingress

4. ConfigMap

17. You have a multi-tier application with frontend, backend, and database services running in separate pods. You need to ensure that the frontend pods can only communicate with the backend pods, and the backend pods can only communicate with the database pods. Which configuration should you apply?

1. Use a ConfigMap to define the allowed IP ranges for each tier and apply it to the pods.

2. Define a PodSecurityPolicy to control the communication between the pods.

3. Create a ServiceAccount for each tier and use RoleBindings to restrict communication.

4. Create a NetworkPolicy for frontend pods that allows egress to backend pods and another for backend pods that allows egress to database pods.

18. You need to perform a canary deployment for a new version of your application to test it with a small percentage of users before fully rolling it out. Which approach using Kubernetes primitives would allow you to achieve this?

1. Use a Deployment to create a new version of the application and a Service to route 90% of traffic to the old version and 10% to the new version.

2. Use a Job to deploy the new version and a Service to route traffic based on the Job completion status.

3. Use a StatefulSet to deploy the new version and configure a Service to split traffic between the old and new versions.

4. Use a ConfigMap to store the new version's configuration and a Service to route traffic based on ConfigMap values.

19. How can a ConfigMap be used to set environment variables in a Pod?

1. By referencing it in the Pod's environment field

2. By applying it to the kube-apiserver configuration

3. By creating a Secret from it

4. By mounting it as a volume

20. You are tasked with creating a Kubernetes deployment for an application that requires high availability. The application should have a minimum of 3 replicas running at all times, and it should be distributed across different nodes to ensure resilience. Additionally, you need to ensure that rolling updates are performed with zero downtime. Which of the following configuration options best meets these requirements?

1. Set replicas to 2 and use a Recreate strategy.

2. Set replicas to 3 and use a RollingUpdate strategy with maxUnavailable set to 0 and maxSurge set to 1.

3. Set replicas to 5 and use a Recreate strategy.

4. Set replicas to 4 and use a RollingUpdate strategy with maxUnavailable set to 1 and maxSurge set to 2.

21. Which component in Kubernetes is responsible for making decisions about whether a request to the API server is allowed to proceed, based on policies defined by the cluster administrators?

1. Scheduler

2. Kubelet

3. Admission Controller

4. API Server

22. You are designing a Kubernetes application and need to build a container image from a Dockerfile. The application requires a specific version of Node.js and needs to copy source code from your local directory into the image. Which Dockerfile commands should you use to accomplish this?

1. FROM node:14

COPY . /app

RUN cd /app && npm install

CMD ["node", "app.js"]

2. FROM node:14

ADD . /app

RUN npm install

CMD ["npm", "start"]

3. FROM node:latest

COPY /source /app

RUN npm install

CMD ["node", "app.js"]

4. FROM node:14

COPY . /app

CMD ["npm", "start"]

23. You are tasked with deploying a highly available web application on Kubernetes. The application consists of a frontend and a backend, and you want to ensure the frontend service is always available even if some pods fail. Which of the following options best achieves this?

1. Create a Deployment for the frontend with a ReplicaSet and use a Service of type ClusterIP.

2. Create a DaemonSet for the frontend with a Service of type ClusterIP.

3. Create a StatefulSet for the frontend with a PersistentVolume.

4. Create a Deployment for the frontend with a ReplicaSet and use a Service of type NodePort.

24. You need to store database credentials securely and access them from a Kubernetes pod in a way that they are available as environment variables to your application. How should you configure this?

1. Create a Secret and reference it in the pod's environment variables.

2. Store the credentials in a plain text file in the container image.

3. Create a ConfigMap and reference it in the pod's environment variables.

4. Store the credentials directly in the pod's environment variables.

FAQs

1. What is the CKAD certification and who should take it?

The CKAD certification validates a developer’s ability to design, build, and run applications on Kubernetes. It’s ideal for developers working with containerized applications.

2. Is CKAD worth it for developers in 2025?

Yes, CKAD is highly relevant in 2025, especially with the continued adoption of Kubernetes in DevOps and cloud-native environments.

3. What are the prerequisites for the CKAD exam?

You should have a solid understanding of Kubernetes concepts and experience with containerized applications. Prior exposure to YAML, Docker, and Linux commands is helpful.

4. How difficult is the CKAD certification exam?

It’s moderately difficult, especially due to its performance-based, time-sensitive format. Hands-on practice is essential for success.

5. How do I prepare for the CKAD exam?

Use hands-on labs, practice exams, and mock scenarios. CertiMaan offers CKAD dumps and mock tests, and you can also study from the official Kubernetes curriculum.

6. What topics are covered in the CKAD exam?

Key domains include Pod design, Configuration, Multi-container Pods, Observability, Services & Networking, and State Persistence.

7. How long is the CKAD exam and what is the format?

The exam is 2 hours long and consists of performance-based tasks completed in a command-line environment.

8. What is the passing score for CKAD certification?

You must score at least 66% to pass the exam.

9. Can I take the CKAD exam online from home?

Yes, it’s an online proctored exam that can be taken from home with a stable internet connection.

10. How much does the CKAD exam cost?

The exam fee is $395 USD, which includes one free retake if needed.

11. What is the validity period of the CKAD certification?

The CKAD certification is valid for 3 years from the date of issue.

12. Where can I find the best CKAD practice tests?

CertiMaan provides high-quality CKAD practice exams and realistic mock scenarios aligned with the current exam format.

13. Does CertiMaan offer CKAD dumps or mock exams?

Yes, CertiMaan offers updated CKAD dumps and timed mock tests designed to simulate the real exam environment.

14. How long does it take to prepare for the CKAD exam?

It typically takes 4–6 weeks of consistent study and practice for experienced developers.

15. What is the difference between CKAD and CKA?

CKAD focuses on application development within Kubernetes, while CKA covers cluster administration and management.

16. What kind of jobs can I get with CKAD certification?

Jobs include Kubernetes Developer, DevOps Engineer, Cloud Native Engineer, and Site Reliability Engineer (SRE).

17. What is the average salary after CKAD certification?

Certified professionals often earn between $100,000 and $140,000 annually, depending on role and experience.

18. Which companies prefer CKAD certified professionals?

Companies like Google, Red Hat, VMware, Amazon, and IBM prefer or require CKAD for roles involving Kubernetes.

19. Do I need prior Kubernetes experience to attempt CKAD?

Yes, practical experience with Kubernetes is highly recommended before taking the exam.

20. Are there any free resources for CKAD preparation?

Yes, the official Kubernetes documentation is free and invaluable. CertiMaan also provides limited free practice content alongside premium resources.