FREE PDF QUIZ LINUX FOUNDATION - VALID CKA - CERTIFIED KUBERNETES ADMINISTRATOR (CKA) PROGRAM EXAM ACTUAL TEST PDF

Free PDF Quiz Linux Foundation - Valid CKA - Certified Kubernetes Administrator (CKA) Program Exam Actual Test Pdf

Free PDF Quiz Linux Foundation - Valid CKA - Certified Kubernetes Administrator (CKA) Program Exam Actual Test Pdf

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Tags: CKA Actual Test Pdf, Latest CKA Test Sample, CKA Latest Dumps Sheet, CKA Reliable Exam Answers, Pass CKA Guide

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q119-Q124):

NEW QUESTION # 119
You have a Deployment with 5 replicas. You want to increase the number of replicas to 10, but only after ensuring that the new pods are healthy and ready to serve traffic.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Update the Deployment YAML:
- Update the 'replicas' field in the Deployment YAML to 10.

2. Apply the Changes: - Apply the updated YAML file using 'kubectl apply -f my-deployment.yaml' 3. Monitor Pod Status: - Use 'kubectl get pods -l app=my-app' to monitor the status of the pods. - Ensure that the new pods are in the "Running' state and have a 'Ready' status. 4. Check Liveness and Readiness Probes: - If applicable, ensure that liveness and readiness probes are configured to check the health of the pods. - This helps in identifying and restarting unhealthy pods. 5. Verify Service Availability: - Use 'kubectl get services my-service" to check the service status. - Ensure that the service is still available and serving traffic. 6. Increase Replicas: - Once the new pods are healthy and ready, the deployment will automatically scale up to 10 replicas.


NEW QUESTION # 120
You are running a Kubernetes cluster with a critical application that requires high availability and resilience. You have a Deployment named 'web-app' with multiple replicas. Your current DNS setup relies on external DNS providers, but you want to implement CoreDNS within your cluster to enhance DNS resolution performance and reliability. You need to configure CoreDNS to resolve DNS queries for services within the cluster and for external domains.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 Create a CoreDNS ConfigMap:
- Create a ConfigMap named coredns' containing the CoreDNS configuration. You can use a basic configuration file or a more complex one tailored to your specific needs.

2. Deploy CoreDNS: - Deploy CoreDNS as a Deployment using the 'coredns' ConfigMap.

3. Configure Services for DNS Resolution: - Create a Service named 'coredns' of type 'ClusterlP' that exposes the CoreDNS Deployment on the cluster network.

4. Update Cluster DNS Configuration: - Modify the 'kube-system namespace 'ConfigMap' named 'cluster-dns' to point to the 'coredns' Service for DNS resolution.

5. Verify CoreDNS Functionality: - Use 'kubectl exec -it -- sh -c "nslookup ..svc.cluster.local"' to test DNS resolution for services within the cluster. - Use "kubectl exec -it sh -c "nslookup example.com"' to test DNS resolution for external domains. - If everything is configured correctly, CoreDNS should successfully resolve DNS queries.


NEW QUESTION # 121
You have a Deployment named 'database-deployment' with 2 replicas of a database container. You want to implement a rolling update strategy that allows for a maximum of one pod to be unavailable at any given time. However, you also want to ensure that the database container is restarted automatically when it encounters a failure or crashes. This restart policy should be applied only to the database containers within the deployment and not affect any other containers in the same pod.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Update the Deployment YAML:
- Update the 'replicas' to 2.
- Define 'maxUnavailable: 1' and 'maxSurge: 0' in the strategy.rollingUpdate' section to control the rolling update process.
- Configure a 'strategy.type' to 'RollingUpdate' to trigger a rolling update when the deployment is updated.
- Set 'spec.template.spec.containers[0].restartPolicy: Always' to ensure the database container restarts automatically when it encounters a failure.

2. Create the Deployment: - Apply the updated YAML file using 'kubectl apply -f database-deployment.yaml' 3. Verify the Deployment: - Check the status of the deployment using 'kubectl get deployments database-deployment' to confirm the rollout and updated replica count. 4. Test the Restart Policy: - Trigger a failure in the 'database' container within one of the pods. This can be done by sending a SIGKILL signal to the container or by simulating a crash within the container itself. - Observe that the 'database' container will be restarted automatically while other containers in the same pod will remain unaffected. 5. Trigger the Automatic Update: - Push a new image to the 'my-database-image:latest registry. 6. Monitor the Deployment: - Use "kubectl get pods -l app=database' to monitor the pod updates during the rolling update process. 7. Check for Successful Update: - Once the deployment is complete, use 'kubectl describe deployment database-deployment' to see that the 'updatedReplicas' field matches the 'replicas' field, indicating a successful update.


NEW QUESTION # 122
List "nginx-dev" and "nginx-prod" pod and delete those pods

Answer:

Explanation:
See the solution below.
Explanation
kubect1 get pods -o wide
kubectl delete po "nginx-dev"kubectl delete po "nginx-prod"


NEW QUESTION # 123
Create a namespace called 'development' and a pod with image nginx called nginx on this namespace.

Answer:

Explanation:
kubectl create namespace development kubectl run nginx --image=nginx --restart=Never -n development


NEW QUESTION # 124
......

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