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Valid Linux Foundation CKA Exam Format, Instant CKA Access
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Linux Foundation CKA (Certified Kubernetes Administrator) Program Certification Exam is a leading certification program designed for IT professionals who want to demonstrate their expertise in managing and deploying applications using Kubernetes technology. Kubernetes is an open-source container orchestration system that automates the deployment, scaling, and management of containerized applications. As containerization becomes increasingly popular in modern software development, the demand for Kubernetes experts has grown rapidly. The CKA Certification program is an excellent way for IT professionals to enhance their Kubernetes skills, demonstrate their expertise to employers, and advance their careers.
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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q59-Q64):
NEW QUESTION # 59
Create a pod as follows:
* Name: mongo
* Using Image: mongo
* In a new Kubernetes namespace named
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 60
You have a Deployment running on a Kubernetes cluster with limited resources. How can you adjust the Deployment to use resources more efficiently and prevent resource contention?
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 utilization data. - Adjust resource requests and limits accordingly based on the monitoring data.
NEW QUESTION # 61
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000046
Task
First, create a new StorageClass named local-path for an existing provisioner named rancher.io/local-path .
Set the volume binding mode to WaitForFirstConsumer .
Not setting the volume binding mode or setting it to anything other than WaitForFirstConsumer may result in a reduced score.
Next, configure the StorageClass local-path as the default StorageClass .
Answer:
Explanation:
Task Summary
You need to:
* SSH into cka000046
* Create a StorageClass named local-path using the provisioner rancher.io/local-path
* Set the volume binding mode to WaitForFirstConsumer
* Make this StorageClass the default
Step-by-Step Solution
1## SSH into the correct host
ssh cka000046
## Required. Skipping this = zero score
2## Create a StorageClass YAML file
Create a file named local-path-sc.yaml:
cat <<EOF > local-path-sc.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: local-path
annotations:
storageclass.kubernetes.io/is-default-class: "true"
provisioner: rancher.io/local-path
volumeBindingMode: WaitForFirstConsumer
EOF
# This:
* Sets WaitForFirstConsumer (as required)
* Marks the class as default using the correct annotation
3## Apply the StorageClass
kubectl apply -f local-path-sc.yaml
4## Verify it's the default StorageClass
kubectl get storageclass
You should see local-path with a (default) marker:
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION
AGE
local-path rancher.io/local-path Delete WaitForFirstConsumer false 10s
Final Command Summary
ssh cka000046
cat <<EOF > local-path-sc.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: local-path
annotations:
storageclass.kubernetes.io/is-default-class: "true"
provisioner: rancher.io/local-path
volumeBindingMode: WaitForFirstConsumer
EOF
kubectl apply -f local-path-sc.yaml
kubectl get storageclass
NEW QUESTION # 62
You have a Deployment running a database application with a stateful application using a StatefulSet. How can you scale the database to handle increased read traffic without impacting the write performance for the stateful application?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Use a Read Replica:
- Create a read replica of the database that replicates data from the primary database.
- Use the read replica for read-only operations to distribute the read load.
2. Configure the StatefulSet:
- Configure the StatefulSet to access the read replica for read-only operations.
- Use a separate Service for the read replica and configure the StatefulSet to access it.
3. Implement a Load Balancer:
- Use a Load Balancer to direct read traffic to the read replica and write traffic to the primary database.
- Configure the Load Balancer to use a specific port for read requests and another port for write requests.
4. Monitor Performance:
- Monitor the performance of both the primary database and the read replica.
- Ensure that the read replica is adequately handling the read load without impacting the write performance on the primary database.
5. Scale Read Replicas:
- If necessary, scale the number of read replicas to handle increased read traffic.
- Add more read replicas as needed and adjust the Load Balancer configuration to distribute the traffic evenly.
NEW QUESTION # 63
Perform the following tasks:
Add an init container to hungry-bear (which has been defined in spec file /opt/KUCC00108/pod-spec-KUC C00108.yaml ) The init container should create an empty file named /workdir/calm.txt If /workdir/calm.txt is not detected, the pod should exit Once the spec file has been updated with the init container definition, the pod should be created
Answer:
Explanation:
solution
NEW QUESTION # 64
......
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