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The CKA exam is designed to test an individual's ability to perform real-world tasks in a Kubernetes environment. CKA exam is conducted online and consists of a set of performance-based tasks that need to be completed within a given time frame. CKA exam covers a range of topics such as Kubernetes architecture, installation and configuration, networking, storage, security, and troubleshooting. CKA exam is challenging and requires a high level of expertise in Kubernetes administration. However, passing the exam is a testament to an individual's skills and knowledge in Kubernetes and can lead to better job opportunities and career growth in the industry.

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q67-Q72):

NEW QUESTION # 67
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 # 68
You have two Kubernetes deployments running in different namespaces, 'namespace-A' and 'namespace-B'. You need to allow communication from pods in 'namespace-A' to a specific pod in namespace-B'. How can you achieve this using NetworkPolicies?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a NetworkPolicy in namespace-R:
- Create a NetworkPolicy in 'namespace-R that allows traffic to the specific pod in 'namespace-B'.
- Code:

2. Ensure the Target Pod has the Correct Label: - Ensure that the specific pod in 'namespace-B' has the label 'app: target-pod'. 3. Apply the NetworkPolicy: - Apply the NetworkPolicy using 'kubectl apply -f networkpolicy.yaml' .,

NEW QUESTION # 69
Create a file:
/opt/KUCC00302/kucc00302.txtthatlists all pods that implement servicebazin namespacedevelopment.
The format of the file should be onepod name per line.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 70
Create a busybox pod and add "sleep 3600" command

Answer:

Explanation:
kubectl run busybox --image=busybox --restart=Never -- /bin/sh -c
"sleep 3600"

NEW QUESTION # 71
Score:7%

Task
Create a new PersistentVolumeClaim
* Name: pv-volume
* Class: csi-hostpath-sc
* Capacity: 10Mi
Create a new Pod which mounts the PersistentVolumeClaim as a volume:
* Name: web-server
* Image: nginx
* Mount path: /usr/share/nginx/html
Configure the new Pod to have ReadWriteOnce
Finally, using kubectl edit or kubectl patch PersistentVolumeClaim to a capacity of 70Mi and record that change.

Answer:

Explanation:
See the solution below.
Explanation
Solution:
vi pvc.yaml
storageclass pvc
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pv-volume
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 10Mi
storageClassName: csi-hostpath-sc
# vi pod-pvc.yaml
apiVersion: v1
kind: Pod
metadata:
name: web-server
spec:
containers:
- name: web-server
image: nginx
volumeMounts:
- mountPath: "/usr/share/nginx/html"
name: my-volume
volumes:
- name: my-volume
persistentVolumeClaim:
claimName: pv-volume
# craete
kubectl create -f pod-pvc.yaml
#edit
kubectl edit pvc pv-volume --record

NEW QUESTION # 72
......

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