BEST WAY TO ENSURE SUCCESS WITH LINUX FOUNDATION CKA EXAM QUESTIONS

Best Way To Ensure Success With Linux Foundation CKA Exam Questions

Best Way To Ensure Success With Linux Foundation CKA Exam Questions

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Exam CKA Course | Exam CKA Bootcamp

PassLeader Linux Foundation CKA exam training materials are provided in PDF format and software format. It contains Linux Foundation CKA exam questions and answers. These issues are perfect, Which can help you to be successful in the Linux Foundation CKA Exam. PassLeader Linux Foundation CKA exam comprehensively covers all syllabus and complex issues. The PassLeader Linux Foundation CKA exam questions and answers is the real exam challenges, and help you change your mindset.

Cloud Native Computing Foundation (CNCF) Exams

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q28-Q33):

NEW QUESTION # 28
You are running a stateful application on Kubernetes with a Deployment that manages five pods. Each pod has a persistent volume claim (PVC) that mounts a volume to store application dat a. You need to ensure that the pods are always deployed in the same order and that data is consistently accessed from the same PVC. How can you achieve this using Kubernetes features?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Enable StatefulSet: Create a StatefulSet instead of a Deployment. StatefulSets are specifically designed to manage stateful applications.

2. Use the 'podManagementPolicy' Field: Set the 'podManagementPolicy' field to 'OrderedReady' in the spec' section of your StatefulSet to ensure that pods are deployed in the same order and become ready before new pods are deployed. This policy guarantees that the previous pod is ready before the next one is started.

3. Utilize Persistent Volumes: Ensure that your PVCs are bound to persistent volumes (PVs). PVs are the underlying storage resources that back your PVCs. They are usually provisioned using a storage class.

4. Set 'serviceName': The 'serviceName' field should be specified in the StatefulSet to create a service for accessing the application. This service allows you to access the application based on its name, regardless of which pod is currently serving the requests.

5. Verify Deployment: After applying the YAML, check the status of your StatefulSet using 'kubectl get statefulset my-stateful-app'. Ensure that the pods are deployed in the specified order and are running. You can also verify the PVCs using 'kubectl get pvc' to make sure they are bound to the correct PVs.


NEW QUESTION # 29
Check the history of deployment

Answer:

Explanation:
kubectl rollout history deployment webapp


NEW QUESTION # 30
You have a multi-cluster Kubernetes environment, and you need to implement cross-cluster communication between two clusters named 'cluster 1 and 'cluster?. You need to use CoreDNS to resolve service names across clusters. For example, a pod in cluster 1' should be able to access a service named 'my- service' running in 'cluster2'.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install CoreDNS in Both Clusters:
- Follow the steps in the previous solution to install and configure CoreDNS in both 'cluster 1 ' and 'cluster?.
2. Configure Cross-Cluster DNS in CoreDNS:
- In 'cluster 1 ' , modify the CoreDNS configuration file to forward requests for services in 'cluster? to the CoreDNS service in 'cluster?.

- Repeat the same configuration for 'cluster2' , forwarding requests for services in 'cluster 1 ' to the CoreDNS service in 'clusterl'. 3. Configure Services with External Names: - In 'cluster? , configure the 'my-service' service to have an 'externalName' field set to 'my- service.clusterl .locar. This will tell CoreDNS to forward requests for 'my-service' to the CoreDNS service in 'cluster 1'.

4. Test Cross-Cluster Communication: - Deploy a pod in 'cluster 1 ' that tries to access 'my-service' in 'cluster?. - Verify that the pod can successfully communicate with the service in 'cluster? using its service name.


NEW QUESTION # 31
You have a Deployment named 'nginx-deployment running an Nginx server. The Nginx configuration file is stored in a ConfigMap named 'nginx-config'. You need to dynamically update the Nginx configuration file without restarting the Nginx pods.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create the ConfigMap (if not already existing):
- Define a ConfigMap named 'nginx-config' containing the Nginx configuration file. For example, create a file 'nginx.conf with the desired configuration and then create the ConfigMap using 'kubectl create configmap nginx-config --from-file=nginx.conf:
kubectl create configmap nginx-config --from-file=nginx.conf
2. Configure Nginx Deployment:
- Modify the 'nginx-deployment' Deployment to mount the 'nginx-config' ConfigMap as a volume.
- Use 'volumeMounts' to specify where the ConfigMap should be mounted (e.g., '/etc/nginx/conf.d/' ) and 'volumes' to define the ConfigMap as a volume source.
- Update the Nginx container's configuration to use the mounted configuration file (e.g., 'nginx -g daemon off;').

3. Update the ConfigMap: - Modify the 'nginx-config' ConfigMap with the new configuration content. This can be done using 'kubectl patch' or 'kubectl edit': kubectl patch configmap nginx-config -p '{"data": {"nginx.conf": "new_nginx_configuration"}}' 4. Observe Nginx Pods: - Monitor the Nginx pods in the 'nginx-deployment' Deployment. Since the ConfigMap is mounted as a volume, Nginx will automatically reload the configuration file without restarting the pod. 5. Verify the Update: - Use 'kubectl logs' or 'kubectl exec' to examine the Nginx pod's logs and confirm that the new configuration is being used.


NEW QUESTION # 32
Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed

Answer:

Explanation:
kubectl run busybox --image=busybox -it --rm --restart=Never -- /bin/sh -c 'echo hello world' kubectl get po # You shouldn't see pod with the name "busybox"


NEW QUESTION # 33
......

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