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CKA Latest Exam Questions Updated Questions Pool Only at ValidExam

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q18-Q23):NEW QUESTION # 18
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to /opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.
Answer:
Explanation:
Solution:




NEW QUESTION # 19
Update the deployment with the image version 1.16.1 and verify the image and check the rollout history
Answer:
Explanation:
kubectl set image deploy/webapp nginx=nginx:1.16.1 kubectl describe deploy webapp | grep Image kubectl rollout history deploy webapp

NEW QUESTION # 20
Monitor the logs of pod foo and:
* Extract log lines corresponding unable-to-access-website
* Write them to/opt/KULM00201/foo

Answer:
Explanation:
See the solution below.
Explanation
solution



NEW QUESTION # 21
You have a Deployment that runs a containerized web application. The web application depends on a specific database service running on a different node in the cluster. The web application should only be able to connect to the database service on port 5432 and not any other services running on the database node. How can you define a NetworkPolicy to achieve this?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Network Policy Definition:

2. Explanation: - 'apiVersion: networking.k8s.io/v1 Specifies the API version for NetworkPolicy resources. - 'kind: NetworkPolicy': Specifies that this is a NetworkPolicy resource. - 'metadata.name: allow-database-access': Sets the name of the NetworkPolicy. - 'metadata.namespace: Specifies the namespace where the NetworkPolicy is applied. Replace with the actual namespace where your web application Deployment is running. - 'spec.podSelector.matchLabels: app: web-app': This selector targets Pods labeled with 'app: web-app', ensuring the NetworkPolicy applies to the web application Pods. - 'spec.ingress.from.podSelector.matchLabels: app: database': This allows incoming traffic only from Pods labeled with 'app: database'. - 'spec.ingress.ports.port: 5432': This allows communication only on port 5432. - 'spec.ingress.ports.protocol: TCP': Specifies the protocol (TCP) for the allowed port. 3. How it works: - This NetworkPolicy allows the web application Pods to connect only to the database service Pods on port 5432. It denies all other traffic from the database node, including other services that might be running on that node. 4. Implementation: - Apply the YAML using 'kubectl apply -f allow-database-access.yaml' 5. Verification: After applying the NetworkPolicy, test the connectivity from the web application Pods to the database service on port 5432 and to other services on the database node. You should observe that the NetworkPolicy effectively enforces the restrictions, allowing access only to the specified database port.

NEW QUESTION # 22
Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed See the solution below.
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 # 23
......
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