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CKAD certification is designed for software developers who have experience in container-based application development and want to validate their skills in Kubernetes application development. Additionally, system administrators, DevOps engineers, and IT professionals who work with Kubernetes can also take the certification to enhance their skills and knowledge.

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To prepare for the CKAD certification exam, an individual should have hands-on experience in Kubernetes application development. Additionally, the Linux Foundation offers a CKAD training course that provides individuals with the necessary knowledge and skills to pass the certification exam. There are also various online resources and practice exams available that can be used to prepare for the exam.

Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q21-Q26):

NEW QUESTION # 21
Context

Task:
A pod within the Deployment named buffale-deployment and in namespace gorilla is logging errors.
1) Look at the logs identify errors messages.
Find errors, including User “system:serviceaccount:gorilla:default” cannot list resource “deployment” […] in the namespace “gorilla”
2) Update the Deployment buffalo-deployment to resolve the errors in the logs of the Pod.
The buffalo-deployment ‘S manifest can be found at -/prompt/escargot/buffalo-deployment.yaml

Answer:

Explanation:
Solution:

NEW QUESTION # 22
Refer to Exhibit.

Set Configuration Context:
[student@node-1] $ | kubectl
Config use-context k8s
Context
You sometimes need to observe a pod’s logs, and write those logs to a file for further analysis.
Task
Please complete the following;
* Deploy the counter pod to the cluster using the provided YAMLspec file at /opt/KDOB00201/counter.yaml
* Retrieve all currently available application logs from the running pod and store them in the file /opt/KDOB0020l/log_Output.txt, which has already been created

Answer:

Explanation:
Solution:
To deploy the counter pod to the cluster using the provided YAML spec file, you can use the kubectl apply command. The apply command creates and updates resources in a cluster.
kubectl apply -f /opt/KDOB00201/counter.yaml
This command will create the pod in the cluster. You can use the kubectl get pods command to check the status of the pod and ensure that it is running.
kubectl get pods
To retrieve all currently available application logs from the running pod and store them in the file /opt/KDOB0020l/log_Output.txt, you can use the kubectl logs command. The logs command retrieves logs from a container in a pod.
kubectl logs -f <pod-name> > /opt/KDOB0020l/log_Output.txt
Replace <pod-name> with the name of the pod.
You can also use -f option to stream the logs.
kubectl logs -f <pod-name> > /opt/KDOB0020l/log_Output.txt &
This command will retrieve the logs from the pod and write them to the /opt/KDOB0020l/log_Output.txt file.
Please note that the above command will retrieve all logs from the pod, including previous logs. If you want to retrieve only the new logs that are generated after running the command, you can add the –since flag to the kubectl logs command and specify a duration, for example –since=24h for logs generated in the last 24 hours.
Also, please note that, if the pod has multiple containers, you need to specify the container name using -c option.
kubectl logs -f <pod-name> -c <container-name> > /opt/KDOB0020l/log_Output.txt The above command will redirect the logs of the specified container to the file.

NEW QUESTION # 23
Context

Task:
1) First update the Deployment cka00017-deployment in the ckad00017 namespace:
To run 2 replicas of the pod
Add the following label on the pod:
Role userUI
2) Next, Create a NodePort Service named cherry in the ckad00017 nmespace exposing the ckad00017-deployment Deployment on TCP port 8888

Answer:

Explanation:
Solution:

NEW QUESTION # 24

Task
You have rolled out a new pod to your infrastructure and now you need to allow it to communicate with the web and storage pods but nothing else. Given the running pod kdsn00201 -newpod edit it to use a network policy that will allow it to send and receive traffic only to and from the web and storage pods.

Answer:

Explanation:
See the solution below.
Explanation
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: internal-policy
namespace: default
spec:
podSelector:
matchLabels:
name: internal
policyTypes:
– Egress
– Ingress
ingress:
– {}
egress:
– to:
– podSelector:
matchLabels:
name: mysql
ports:
– protocol: TCP
port: 3306
– to:
– podSelector:
matchLabels:
name: payroll
ports:
– protocol: TCP
port: 8080
– ports:
– port: 53
protocol: UDP
– port: 53
protocol: TCP

NEW QUESTION # 25

Context
Your application’s namespace requires a specific service account to be used.
Task
Update the app-a deployment in the production namespace to run as the restrictedservice service account. The service account has already been created.