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[General] Questions Linux Foundation CKAD Pdf | Test CKAD Price

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【General】 Questions Linux Foundation CKAD Pdf | Test CKAD Price

Posted at 1/28/2026 00:59:48      View：36 | Replies：0        Print      Only Author   [Copy Link] 1#
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Linux Foundation CKAD certification is a valuable credential for anyone who wants to work with Kubernetes in a professional capacity. It demonstrates a deep understanding of Kubernetes concepts and practical skills, and it can help candidates stand out in a competitive job market. By passing the CKAD exam, candidates can demonstrate their ability to deploy, manage, and scale complex containerized applications using Kubernetes.
The CKAD certification exam is a performance-based exam that tests the practical skills of candidates in developing and deploying applications on Kubernetes clusters. CKAD Exam consists of a set of performance-based tasks that simulate real-world scenarios. The tasks include deploying and configuring applications, creating and managing Kubernetes objects, and troubleshooting common issues. CKAD exam is proctored, and candidates are given a time limit of two hours to complete all the tasks.
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Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q117-Q122):NEW QUESTION # 117
You have a Deployment named 'wordpress-deployment' that runs 3 replicas of a WordPress container. You want to ensure that the deployment is always updated with the latest image available in the 'wordpress/wordpress:latest' Docker Hub repository However, you need to implement a rolling update strategy that allows for a maximum ot two pods to be unavailable during the update process.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. IJpdate the Deployment YAML:
- Update the 'replicas to 3-
- Define 'maxunavailable: 2 and 'maxSurge: in the 'strategy.rollingupdate' section.
- Configure a 'strategy-type' to 'RollinglJpdate' to trigger a rolling update when the deployment is updated.
- Add a 'spec-template-spec-imagePullPolicy: Always' to ensure that the new image is pulled even if it exists in the pod's local cache.

2. Create the Deployment: - Apply the updated YAML file using 'kubectl apply -f wordpress-deployment.yamr 3. Verify the Deployment: - Check tne status of the deployment using 'kubectl get deployments wordpress-deployment' to confirm the rollout and updated replica count. 4. Trigger the Automatic Update: - Push a new image to the 'wordpress/wordpress:latest Docker Hub repository. 5. Monitor the Deployment: - Use 'kubectl get pods -I app=wordpress' to monitor the pod updates during the rolling update process. You will observe that two pods are terminated at a time, while two new pods with the updated image are created. 6. Check for Successful Update: - Once the deployment is complete, use 'kubectl describe deployment wordpress-deployment' to see that the 'updatedReplicaS field matches the 'replicas' field, indicating a successful update.

NEW QUESTION # 118
Exhibit:

Task
Create a new deployment for running.nginx with the following parameters;
* Run the deployment in the kdpd00201 namespace. The namespace has already been created
* Name the deployment frontend and configure with 4 replicas
* Configure the pod with a container image of lfccncf/nginx:1.13.7
* Set an environment variable of NGINX__PORT=8080 and also expose that port for the container above
  • A. Solution:



  • B. Solution:




Answer: A

NEW QUESTION # 119
You have a Deployment named 'web-apps that runs 3 replicas of a web application container. This application relies on a database service, also deployed as a Deployment named 'db-service' You need to implement a sidecar pattern using the 'initContainer' feature to ensure that the database service is up and running before the web application container starts. The web application container should only start once the database is reachable.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the 'initcontainer':
- Add a new container definition within the 'spec.template.spec.initContainerS section of the 'web-app' Deployment.
- Name the container as 'db-checker'
- Specify an image that will be used to perform the database health check. You can use a simple image like 'busybox' and install 'curl' in the 'initContainer' to perform the health check.
- The 'command' for the 'initcontainer' should run a 'while' loop that keeps checking the database service's health endpoint until it returns a successful status code.
- You can define the health endpoint in the 'db-service' Deployment's service definition.

2. Update the 'db-service' Deployment - Ensure that the 'db-servjce' Deployment includes a health cneck endpoint in its service definition. - For example, you can expose a health endpoint at 'http://db-service:5432/health' in your database service's configuration. - The health endpoint should return a successful status code (e.g., 200) if the database is running and ready. - If the database is not reachable, the endpoint should return an error code.

3. Apply the changes: - Apply the updated 'web-app' and 'db-service' Deployment YAML files to your Kubernetes cluster using 'kubectl apply' 4. Verify the implementation: - Once the Deployment iS updated, verity that the 'web-app' pods only start atter the 'db-service' pods are ready. - You can observe the 'initcontainer' logs tor the 'db-checker' container to confirm that the health checks are being performed. - You can also monitor the 'db-service' pods to ensure they are in a 'Running' state. This setup will ensure that the 'web-app' containers will not start until the 'db-service' is reachable and healthy. This ensures that the web application has access to the database and can function properly.,

NEW QUESTION # 120
You are managing a Kubernetes cluster running a highly-available application that uses a custom resource called 'Orders. The 'orders resource is created and managed by a custom controller that ensures the order processing workflow runs flawlessly. However, the 'order' resource's validation rules have changed, requiring a new schema to be applied. How can you ensure that the existing 'Order' resources conform to the new schema without disrupting the application's functionality?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Define the New Schema:
- Create a new CustomResourceDefinition (CRD) file with the updated schema for the 'Order' resource.
- Ensure that the CRD's 'spec-validation.openAPlV3Schema' field includes all the new validation rules.

2. Update the CRD: - Apply the new CRD definition using 'kubectl apply -f order-crd.yaml'. 3. Create a Webhook for Validation: - Define a webhook in your Kubernetes cluster that will be responsible for validating the 'order' resources against the new schema. - Configure the webhook to be invoked during resource creation and update operations.

4. Deploy the Validation Service: - Create a deployment for the validation service that implements the logic for validating the 'Order' resources against the new schema. - The service should expose an endpoint that the webhook can communicate with.

5. Reconcile Existing Resources: - Once the validation webhook and service are deployed, create a temporary job that iterates through all existing 'Order resources. - The job snould validate each resource against tne new schema and automatically update any resources that do not comply.

By following these steps, you can ensure that your 'order' resources conform to the new schema without disrupting the application's functionality The validation webhook prevents new invalid resources from being created, and the reconciliation job ensures that existing resources are updated to meet the new schema requirements. This approach allows for smooth schema evolution and maintains the consistency of your data.,

NEW QUESTION # 121
You have a Deployment named 'my-app-deployment' that runs 3 replicas of a Spring Boot application. This application needs to access a PostgreSQL database hosted on your Kubernetes cluster. You need to create a Custom Resource Definition (CRD) to define a new resource called 'Database' to represent the PostgreSQL database instances within your cluster. This CRD should include fields for specifying the database name, username, password, and the host where the database is deployed. Further, you need to configure the 'my- app-deployment' to use the 'Database' resource to connect to the PostgreSQL instance dynamically.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the CRD:
- Create a YAML file named 'database.crd.yaml' to define the "Database' resource:

2. the CRD: - Apply tre 'database.cre.yaml' using 'kubectl "ply -f database.crd.ya'mr 3. Create A Database Instance: - 'eate YAML file 'd:tabaseyarnl' to define a database instance

4. Apply the Database Instance: - Apply the 'database.yaml' using 'kubectl apply -f database.yamr 5. IJpdate the Deployment - Update the Amy-app-deployment.yaml' to use the 'Database' resource:

6. Apply the Updated Deployment: - Apply the updated 'my-app-deployment.yamr using 'kubectl apply -f my-app-deployment.yamr 7. Verify the Configuration: - Use 'kubectl get databases to check the database instance. - Use 'kubectl describe pod -l app=my-app' to verify that the pods are using the values from the 'Database' resource tor connecting to the PostgreSQL database. This approach demonstrates how to utilize CRDs to define custom resources in Kubernetes and how to connect applications dynamically to these resources. The CRO ensures proper definition of the database resource, while the deployment utilizes the 'fieldRef mechanism to access and retrieve database connection details directly from the CRD, enabling dynamic configuration and simplification of application setup.,

NEW QUESTION # 122
......
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