Exam CKA PDF - CKA Examinations Actual Questions

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The Importance of CNCF CKA Certification Exam

The CNCF Certified Kubernetes Administrator exam will provide a great opportunity to those who want to be part of the cloud-native revolution. The certification is a step closer towards the goal of becoming a certified engineer or operations professional. Management of infrastructure running in production environments with Kubernetes is a huge priority for enterprises today. Deploying Kubernetes on behalf of an enterprise will provide enormous value and cost savings. Advised to be prepared to take the CNCF Certified Kubernetes Administrator exam, candidates should know how to deploy, manage, and troubleshoot applications on Kubernetes clusters. CNCF CKA exam dumps will help the candidate in passing the CNCF Certified Kubernetes Administrator exam. Personally, it is a great deal. Check out the official study guide and practice as much as possible for the exam. Viewing and practicing as much as possible will increase the odds of passing the CNCF Certified Kubernetes Administrator exam. Start studying for the exam well in advance to avoid cramming before the exam. This will help relieve stress and help you to perform better.

Publish date of the content on the website is subject to change without notice. Role of the website is to offer candidates information about Brightwork. Master the content of the study guide and pass the certification exam. The worker role will be to apply the study guide knowledge to passing the CNCF Certified Kubernetes Administrator exam. Command of Kubernetes will also be crucial in playing a role in the successful management of applications on clusters. Stateful applications are deployed onto Kubernetes by using one of the available storage classes.

The CKA Exam is challenging and requires a lot of preparation. CKA exam is designed to test the candidate's ability to perform various tasks, including deploying applications, configuring network policies, and troubleshooting cluster issues. CKA exam is conducted using a real-world Kubernetes environment, and the candidate has access to all the necessary tools and resources. To pass the exam, the candidate must score at least 74%, and the exam is valid for three years.

The CKA exam is a hands-on, performance-based test that is designed to evaluate an individual’s ability to perform tasks that are commonly encountered when working with Kubernetes. CKA exam covers topics such as cluster architecture, installation and configuration, networking, security, storage, and troubleshooting. CKA exam is conducted in a real Kubernetes environment, and candidates are required to complete a series of tasks within a given timeframe. Upon successful completion of the exam, candidates are awarded the CKA certification, which is recognized globally as a mark of excellence and expertise in Kubernetes.

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q48-Q53):

NEW QUESTION # 48
You must connect to the correct host.
Failure to do so may result in a zero score.
[candidate@base] $ ssh Cka000049
Task
Perform the following tasks:
Create a new PriorityClass named high-priority for user-workloads with a value that is one less than the highest existing user-defined priority class value.
Patch the existing Deployment busybox-logger running in the priority namespace to use the high-priority priority class.

Answer:

Explanation:
Task Summary
* SSH into the correct node: cka000049
* Find the highest existing user-defined PriorityClass
* Create a new PriorityClass high-priority with a value one less
* Patch Deployment busybox-logger (in namespace priority) to use this new PriorityClass Step-by-Step Solution
1## SSH into the correct node
bash
CopyEdit
ssh cka000049
## Skipping this = zero score
2## Find the highest existing user-defined PriorityClass
Run:
bash
CopyEdit
kubectl get priorityclasses.scheduling.k8s.io
Example output:
vbnet
CopyEdit
NAME VALUE GLOBALDEFAULT AGE
default-low 1000 false 10d
mid-tier 2000 false 7d
critical-pods 1000000 true 30d
Exclude system-defined classes like system-* and the default global one (e.g., critical-pods).
Let's assume the highest user-defined value is 2000.
So your new class should be:
* Value = 1999
3## Create the high-priority PriorityClass
Create a file called high-priority.yaml:
cat <<EOF > high-priority.yaml
apiVersion: scheduling.k8s.io/v1
kind: PriorityClass
metadata:
name: high-priority
value: 1999
globalDefault: false
description: "High priority class for user workloads"
EOF
Apply it:
kubectl apply -f high-priority.yaml
4## Patch the busybox-logger deployment
Now patch the existing Deployment in the priority namespace:
kubectl patch deployment busybox-logger -n priority
--type='merge'
-p '{"spec": {"template": {"spec": {"priorityClassName": "high-priority"}}}}'
5## Verify your work
Confirm the patch was applied:
kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}'
# You should see:
high-priority
Also, confirm the class exists:
kubectl get priorityclass high-priority
Final Command Summary
ssh cka000049
kubectl get priorityclass
# Create the new PriorityClass
cat <<EOF > high-priority.yaml
apiVersion: scheduling.k8s.io/v1
kind: PriorityClass
metadata:
name: high-priority
value: 1999
globalDefault: false
description: "High priority class for user workloads"
EOF
kubectl apply -f high-priority.yaml
# Patch the deployment
kubectl patch deployment busybox-logger -n priority
--type='merge'
-p '{"spec": {"template": {"spec": {"priorityClassName": "high-priority"}}}}'
# Verify
kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}' kubectl get priorityclass high-priority

NEW QUESTION # 49
Create an nginx pod and list the pod with different levels of verbosity

A. // create a pod
kubectl run nginx --image=nginx --restart=Never --port=80
// List the pod with different verbosity
kubectl get po nginx --v=7
kubectl get po nginx --v=6
kubectl get po nginx --v=9
B. // create a pod
kubectl run nginx --image=nginx --restart=Never --port=80
// List the pod with different verbosity
kubectl get po nginx --v=7
kubectl get po nginx --v=8
kubectl get po nginx --v=9

Answer: B

NEW QUESTION # 50
Your Kubernetes cluster is experiencing a high number of pod restarts in the 'database-service' Deployment. The logs show errors related to "connection refused" from the database service. You need to diagnose the issue and resolve it.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Check the Database Service:
- Verify the database service is running and healthy:
- Use 'kubectl get services database-service' to check the service status.
- If the service is not running, try restarting it with 'kubectl delete service database-service' followed by 'kubectl apply -f database-service.yaml'
2. Investigate Network Connectivity:
- Check if pods in the 'database-service' Deployment can connect to the database service:
- Use 'kubectl exec -it -n bash' to enter a pod in the Deployment.
- Run 'ping database-service' or 'telnet database-service to test network connectivity.
- If ping or telnet fails, there might be a network issue between the pods and the database service.
3. Examine Service Configuration:
- Inspect the database service YAML:
- Verify the port mapping in the service definition matches the port that the database service listens on.
- Ensure the service selector matches the labels of the database pods.
- Example:

4. Check for Network Policies: - Determine if any network policies are blocking traffic between the database service and the pods: - Use 'kubectl get networkpolicies -n ' to list network policies. - Examine the policies to see if they are blocking traffic based on labels, ports, or other criteria. 5. Troubleshoot Database Service: - Verify the database service itself is running and accessible: - If you can access the database service directly from outside the cluster, but the pods cannot connect, there may be an issue with the database service itself. - Run tests to ensure the database is functioning correctly. 6. Test and Redeploy: - After making changes to the service definition, apply the update: - 'kubectl apply -f database-service.yaml' - Monitor the pod restarts. If the issue persists, consider further troubleshooting steps, such as inspecting firewall rules or DNS resolution.

NEW QUESTION # 51
You are deploying a service in Kubernetes that needs to access a database service running in a different namespace. How can you configure NetworkPolicy to allow communication between these services across namespaces?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a NetworkPolicy in the service's namespace:
- Create a NetworkPolicy in the namespace of the service that needs to access the database.
- Code:

2. Ensure the Database Namespace has the Correct Label: - Ensure that the namespace where the database service is running has the label 'database: true'. 3. Apply the NetworkPolicy: - Apply the NetworkPolicy using 'kubectl apply -f networkpolicy.yaml'.

NEW QUESTION # 52
Delete the pod without any delay (force delete)

Answer:

Explanation:
Kubect1 delete po "POD-NAME" --grace-period=0 --force

NEW QUESTION # 53
......

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