CKA EXAM SIMULATION: CERTIFIED KUBERNETES ADMINISTRATOR (CKA) PROGRAM EXAM & CKA CERTIFICATION TRAINING

CKA Exam Simulation: Certified Kubernetes Administrator (CKA) Program Exam & CKA Certification Training

CKA Exam Simulation: Certified Kubernetes Administrator (CKA) Program Exam & CKA Certification Training

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q68-Q73):

NEW QUESTION # 68
Create a redis pod and expose it on port 6379

  • A. kubectl run redis --image=redis --restart=Never --port=6379
    YAML File :
    apiVersion: v1
    kind: Pod
    metadata:
    labels:
    run: redis
    name: redis
    spec:
    containers:
    ports:
    - containerPort: 6679
    Rt restartPolicy: Alwaysf
  • B. kubectl run redis --image=redis --restart=Never --port=6379
    YAML File :
    apiVersion: v1
    kind: Pod
    metadata:
    labels:
    run: redis
    name: redis
    spec:
    containers:
    - image: redis
    name: redis
    ports:
    - containerPort: 6379
    Rt restartPolicy: Always

Answer: B


NEW QUESTION # 69
Create a busybox pod that runs the command "env" and save the output to "envpod" file

Answer:

Explanation:
See the solution below.
Explanation
kubectl run busybox --image=busybox --restart=Never --rm -it -- env > envpod.yaml


NEW QUESTION # 70
Create a pod with environment variables as var1=value1.Check the environment variable in pod See the solution below.

Answer:

Explanation:
kubectl run nginx --image=nginx --restart=Never --env=var1=value1
# then
kubectl exec -it nginx -- env
# or
kubectl exec -it nginx -- sh -c 'echo $var1'
# or
kubectl describe po nginx | grep value1


NEW QUESTION # 71
Create a pod as follows:
Name: mongo
Using Image: mongo
In a new Kubernetes namespace named: my-website

Answer:

Explanation:
solution


NEW QUESTION # 72
You have a Deployment running a complex application that requires significant resource allocation. How can you optimize the Deployment to use resources efficiently and avoid resource contention with other deployments?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define Resource Requests and Limits:
- Set 'requests' and 'limits' for CPU and memory for the containers in the Deployment.
- This helps in specifying the minimum resources required by the pods and the maximum resources that they can consume.

2. Optimize Container Images: - Use smaller and more efficient container images to reduce the resource footprint of the pods. 3. Use Resource Quotas: - Apply resource quotas at the namespace level to control the resource consumption of the pods within a namespace. 4. Consider Pod Disruption Budgets (PDB): - Implement PDBs to control the maximum number of pods that can be unavailable during a rolling update or pod deletion. - This ensures that the application remains available during resource-intensive events. 5. Utilize Node Affinity and Tolerations: - Configure node affinity and tolerations to schedule pods on specific nodes that have the required resources. 6. Monitor Resource Utilization: - Regularly monitor the resource utilization of the cluster and the pods. - Use tools like 'kubectl top pods', 'kubectl top nodes', and 'kubectl describe nodes' to gather resource - Adjust resource requests and limits accordingly based on the monitoring data. 7. Consider Vertical Pod Autoscaler (VPA): - Utilize VPA to automatically adjust the resource requests and limits of pods based on their actual resource consumption. 8. Optimize Application Code: - Identify and optimize resource-intensive parts of the application code to reduce resource consumption. - Use profiling tools to identify areas for improvement. 9. Implement Resource Optimization Techniques: - Utilize techniques such as caching, lazy loading, and efficient data structures to reduce resource usage within the application. 10. Explore Resource Sharing Techniques: - If possible, explore resource sharing techniques such as using shared volumes or databases to reduce overall resource consumption.,


NEW QUESTION # 73
......

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