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2025 Updated Linux Foundation CKA: Certified Kubernetes Administrator (CKA) Program Exam Exam Reference

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Linux Foundation CKA: Certified Kubernetes Administrator (CKA) Program is an excellent certification program for individuals who want to enhance their skills and knowledge in Kubernetes administration. The program provides individuals with the necessary skills to manage and administer Kubernetes clusters effectively, ensuring that applications are deployed and maintained efficiently. Certified Kubernetes Administrator (CKA) Program Exam certification is highly regarded in the industry and is recognized globally, making it a valuable asset for individuals looking to enhance their career opportunities.

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Linux Foundation CKA Exam Syllabus Topics:

Topic
Details

Topic 1

• Troubleshooting: This topic discusses cluster and node logging, monitoring applications, managing container stdout, and stderr logs. It also deals with troubleshooting application failure, cluster component failure, and networking.

Topic 2

• Services & Networking: This topic tests you understandings of host networking configuration, connectivity between Pods, ClusterIP, NodePort, LoadBalancer service types and endpoints. It also explains how to use Ingress controllers and Ingress resources, configure and use CoreDNS. Lastly, it discusses choosing a suitable container network interface plugin.

Topic 3

• Workloads & Scheduling: Its sub-topics are manifest management and common templating tools, primitives, scaling apps, ConfigMaps, and performing rolling update and rollbacks.

Topic 4

• Storage: It explains storage classes, persistent volumes, volume mode, access modes, persistent volume claims primitive, and reclaim policies for volumes. Furthermore, this topic deals with configuring applications with persistent storage.

Topic 5

• Cluster Architecture, Installation & Configuration: In this questions about role-based access control (RBAC), highly-available Kubernetes cluster, deployment of a Kubernetes cluster, etcd backup, and restore are included.

 

Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q72-Q77):

NEW QUESTION # 72
Create a PersistentVolumeClaim of at least 3Gi storage and access mode ReadWriteOnce and verify status is Bound

• A. vim task-pv-claim.yaml
  apiVersion: v1
  kind: PersistentVolumeClaim
  metadata:
  name: task-pv-claim
  spec:
  storageClassName: ""
  accessModes:
  - ReadWriteOnce
  resources:
  requests:
  storage: 3Gi
  kubectl apply -f task-pv-claim.yaml
  //Verify
  kubectl get pv
  NAME CAPACITY ACCESS
  MODES RECLAIM POLICY STATUS CLAIM
  STORAGECLASS REASON AGE
  task-pv-volume 5Gi RWO
  Retain Bound default/task-pv-claim
  6m16s
  kubectl get pvc
  NAME STATUS VOLUME
  CAPACITY ACCESS MODES STORAGECLASS AGE
  task-pv-claim Bound task-pv-volume
  5Gi RWO 6s
• B. vim task-pv-claim.yaml
  apiVersion: v2
  kind: PersistentVolumeClaim
  metadata:
  name: task-pv-claim
  spec:
  storageClassName: ""
  accessModes:
  - ReadWriteOnce
  resources:
  requests:
  storage: 4Gi
  kubectl apply -f task-pv-claim.yaml
  //Verify
  kubectl get pv
  NAME CAPACITY ACCESS
  MODES RECLAIM POLICY STATUS CLAIM
  STORAGECLASS REASON AGE
  task-pv-volume 4Gi RWO
  Retain Bound default/task-pv-claim
  6m16s
  kubectl get pvc
  NAME STATUS VOLUME
  CAPACITY ACCESS MODES STORAGECLASS AGE
  task-pv-claim Bound task-pv-volume
  5Gi RWO 6s

Answer: A

 

NEW QUESTION # 73
Evict all existing pods from a node-1 and make the node unschedulable for new pods.

• A. kubectl get nodes
  kubectl drain node-1 #It will evict pods running on node-1 to
  other nodes in the cluster
  // Verify
  kubectl get no
  When you cordon a node, the status shows "SchedulingDisabled"
• B. kubectl get nodes
  kubectl drain node-1 #It will evict pods running on node-1 to
  other nodes in the cluster
  kubectl cordon node-1 # New pods cannot be scheduled to the
  node
  // Verify
  kubectl get no
  When you cordon a node, the status shows "SchedulingDisabled"

Answer: B

 

NEW QUESTION # 74
You have a Deployment running a web application that receives a significant amount of traffic. You need to implement a strategy to scale the Deployment based on the traffic load while ensuring that the application remains available during the scaling process.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Use a Deployment:
- Deploy the web application using a Deployment with the desired number of replicas.
2. Define a Service:
- Create a Service that exposes the application to the outside world.
- Use a 'type: LoadBalancer' to distribute traffic across the pods.
3. Implement Horizontal Pod Autoscaler (HPA):
- Create an HPA that monitors the web application's CPU usage.
- Configure the HPA to scale the Deployment based on the CPU utilization.

4. Test the Autoscaling: - Simulate increased traffic to the web application. - Observe the HPA scaling the Deployment to meet the demand. 5. Monitor the Service: - Monitor the web application's performance and ensure that it remains available and stable during scaling. 6. Adjust HPA Configuration: - Fine-tune the HPA configuration to optimize scaling based on specific performance needs.

 

NEW QUESTION # 75
Score: 4%

Context
You have been asked to create a new ClusterRole for a deployment pipeline and bind it to a specific ServiceAccount scoped to a specific namespace.
Task
Create a new ClusterRole named deployment-clusterrole, which only allows to create the following resource types:
* Deployment
* StatefulSet
* DaemonSet
Create a new ServiceAccount named cicd-token in the existing namespace app-team1.
Bind the new ClusterRole deployment-clusterrole lo the new ServiceAccount cicd-token , limited to the namespace app-team1.

Answer:

Explanation:
Solution:
Task should be complete on node k8s -1 master, 2 worker for this connect use command
[student@node-1] > ssh k8s
kubectl create clusterrole deployment-clusterrole --verb=create --resource=deployments,statefulsets, daemonsets kubectl create serviceaccount cicd-token --namespace=app-team1 kubectl create rolebinding deployment-clusterrole --clusterrole=deployment-clusterrole -- serviceaccount=default:cicd-token --namespace=app-team1

 

NEW QUESTION # 76
Score: 4%

Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd

Answer:

Explanation:
Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml

 

NEW QUESTION # 77
......

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