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BraindumpsIT is a reputable and highly regarded platform that provides comprehensive preparation resources for the Linux Foundation Certified Kubernetes Application Developer Exam (CKAD). For years, BraindumpsIT has been offering real, valid, and updated CKAD Exam Questions, resulting in numerous successful candidates who now work for renowned global brands.

What is CNCF Certified Kubernetes Application Developer Exam

CNCF Certified Kubernetes Application Developer Exam is a unique opportunity to show that you have mastered the fundamentals of Kubernetes. The exam tests your knowledge of the concepts and knowledge required for a successful implementation of a production-ready Kubernetes cluster. Scenarios are tailored for users who are new to Kubernetes, but familiar with application development. External users and organizations that issue and recognize the credentials of the developer may recognize this exam as a certification. Active releases of Kubernetes may also recognize the credentials of this exam.

Laptop and home computer requirements: A computer running Windows 10 (including Windows 10 S, Windows 10 Fall Creators Update, and Windows 10 October 2018 Update), Mac OS X (Darwin 17.3.5 or later), or Linux Red Hat Enterprise Linux 7 (or later). CNCF CKAD Dumps is formulated for people who are expected to install, configure, and manage multi-node production-grade clusters of Kubernetes nodes deployed on Linux. Topic includes: Kubernetes Concepts and Architecture, Deploying and Managing a multi-node cluster, and Administering and troubleshooting a multi-node cluster. Note that this exam is not meant for people working on Open Source projects unless you are the primary developer. CNCF Certified Kubernetes Application Developer Exam is a unique opportunity to show that you have mastered the fundamentals of Kubernetes. Valuable for companies or individual developers who are responsible for the development, design, and implementation of containerized applications using Kubernetes. Knowing how to build, deploy, and maintain distributed applications running on Kubernetes is crucial for any modern software engineer.

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Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q23-Q28):

NEW QUESTION # 23
You have a Kubernetes cluster running a microservices application. The application nas a set of microservices deployed as Deployments, each with their own set of resource requests and limits- You want to implement a monitoring system to track the resource utilization of these microservices.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install Prometheus: Prometheus is an open-source monitoring system that collects and stores metrics. You can install Prometheus in your Kubernetes cluster using a Deployment:

2 Create a ConfigMap for Prometheus: Define a ConfigMap to configure Prometheus with the desired scrape targets and other settings:

3. Create a Service for Prometheus: Create a Service to expose Prometheus outside the cluster:

4. Install Grafana: Grafana is a popular open-source dashboard and visualization tool. You can install Grafana in your Kubernetes cluster using a Deployment:

5. Create a ConfigMap for Grafana: Create a ConfigMap to configure Grafana with Prometheus as the data source:

6. Create a Service for Grafana: Create a Service to expose Grafana outside the cluster:

T Configure Gratana: Access the Grafana web interface (using the LoadBalancer IP address) and configure a new data source for Prometheus. Specify the Prometheus Service address. 8. Create Dashboards: Create dashboards in Gratana to visualize the metrics collected by Prometheus. You can create dashboards for individual microservices, showing metrics like CPU usage, memory usage, network traffic, and response times. 9. Monitor Your Microservices: Once you have dashboards set up, you can monitor your microservices' resource utilization and performance in real time. use Grafana's alerting features to be notified of any issues or potential problems. ,

NEW QUESTION # 24
Refer to Exhibit.

Context
As a Kubernetes application developer you will often find yourself needing to update a running application.
Task
Please complete the following:
* Update the app deployment in the kdpd00202 namespace with a maxSurge of 5% and a maxUnavailable of 2%
* Perform a rolling update of the web1 deployment, changing the Ifccncf/ngmx image version to 1.13
* Roll back the app deployment to the previous version

Answer:

Explanation:
Solution:

NEW QUESTION # 25
Context

Context
A user has reported an aopticauon is unteachable due to a failing livenessProbe .
Task
Perform the following tasks:
* Find the broken pod and store its name and namespace to /opt/KDOB00401/broken.txt in the format:

The output file has already been created
* Store the associated error events to a file /opt/KDOB00401/error.txt, The output file has already been created. You will need to use the -o wide output specifier with your command
* Fix the issue.

Answer:

Explanation:
Solution:
Create the Pod:
kubectl create -f http://k8s.io/docs/tasks/configure-pod-container/exec-liveness.yaml Within 30 seconds, view the Pod events:
kubectl describe pod liveness-exec
The output indicates that no liveness probes have failed yet:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
24s 24s 1 {default-scheduler } Normal Scheduled Successfully assigned liveness-exec to worker0
23s 23s 1 {kubelet worker0} spec.containers{liveness} Normal Pulling pulling image "gcr.io/google_containers/busybox"
23s 23s 1 {kubelet worker0} spec.containers{liveness} Normal Pulled Successfully pulled image "gcr.io/google_containers/busybox"
23s 23s 1 {kubelet worker0} spec.containers{liveness} Normal Created Created container with docker id 86849c15382e; Security:[seccomp=unconfined]
23s 23s 1 {kubelet worker0} spec.containers{liveness} Normal Started Started container with docker id 86849c15382e After 35 seconds, view the Pod events again:
kubectl describe pod liveness-exec
At the bottom of the output, there are messages indicating that the liveness probes have failed, and the containers have been killed and recreated.
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
37s 37s 1 {default-scheduler } Normal Scheduled Successfully assigned liveness-exec to worker0
36s 36s 1 {kubelet worker0} spec.containers{liveness} Normal Pulling pulling image "gcr.io/google_containers/busybox"
36s 36s 1 {kubelet worker0} spec.containers{liveness} Normal Pulled Successfully pulled image "gcr.io/google_containers/busybox"
36s 36s 1 {kubelet worker0} spec.containers{liveness} Normal Created Created container with docker id 86849c15382e; Security:[seccomp=unconfined]
36s 36s 1 {kubelet worker0} spec.containers{liveness} Normal Started Started container with docker id 86849c15382e
2s 2s 1 {kubelet worker0} spec.containers{liveness} Warning Unhealthy Liveness probe failed: cat: can't open '/tmp/healthy': No such file or directory Wait another 30 seconds, and verify that the Container has been restarted:
kubectl get pod liveness-exec
The output shows that RESTARTS has been incremented:
NAME READY STATUS RESTARTS AGE
liveness-exec 1/1 Running 1 m

NEW QUESTION # 26

Task:
Update the Pod ckad00018-newpod in the ckad00018 namespace to use a NetworkPolicy allowing the Pod to send and receive traffic only to and from the pods web and db

Answer:

Explanation:
See the solution below.
Explanation
Solution:

NEW QUESTION # 27
You need to implement a strategy to manage and control the access of pods to specific resources in your Kubernetes cluster. Explain how you would use PodSecurityPolicies to enforce fine-grained access control.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a PodSecurityPolicy:
- Create a new YAML file (e.g., 'pod-security-policy.yaml') to define your PodSecurityPolicy.
- Specify the name of the PodSecurityPolicy and the namespace where it will be applied.
- Define the security policies for the PodSecurityPolicy. You can use the 'kubectl create -f pod-security- policy.yamP command to apply the PodSecurityPolicy.

3. Apply the PodSecurityPolicy to Deployments: - Update the 'podSecurityContext' field in your Deployment YAML to specify the PodSecurityPolicy.

4. Verify the PodSecurityPolicy: - Use the 'kubectl get podsecuritypolicy' command to list the applied PodSecurityPolicies and confirm their status. 5. Test the Restrictions: - Try to create pods that violate the rules defined in the PodSecurityPolicy. - Verify that the PodSecurityPolicy is effectively preventing the creation of pods that do not meet the defined security policies.,

NEW QUESTION # 28
......

This is similar to the CKAD desktop format but this is browser-based. It requires an active internet connection to run and is compatible with all browsers such as Google Chrome, Mozilla Firefox, Opera, MS Edge, Safari, Internet Explorer, and others. The Linux Foundation CKAD Mock Exam helps you self-evaluate your Linux Foundation Certified Kubernetes Application Developer Exam exam preparation and mistakes. This way you improve consistently and attempt the CKAD certification exam in an optimal way for excellent results in the exam.

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