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Linux Foundation Certified Kubernetes Application Developer (CKAD) Exam is a certification that validates the skills and knowledge of developers working with Kubernetes applications. Kubernetes is an open-source container orchestration system that automates the deployment, scaling, and management of containerized applications. CKAD is a vendor-neutral certification that is recognized by leading technology companies around the world.

Linux Foundation CKAD certification exam is an excellent certification program for developers who work with Kubernetes. Linux Foundation Certified Kubernetes Application Developer Exam certification exam is designed to test the candidate's ability to deploy, manage and troubleshoot Kubernetes applications. Linux Foundation Certified Kubernetes Application Developer Exam certification exam is an online, proctored exam that can be taken from anywhere in the world. Linux Foundation Certified Kubernetes Application Developer Exam certification is ideal for developers who are looking to advance their careers in the field of cloud-native application development and for organizations who are looking to identify qualified professionals who can help them to build and manage Kubernetes applications.

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No doubt the Linux Foundation CKAD certification is a valuable credential that offers countless advantages to CKAD exam holders. Beginners and experienced professionals can validate their skills and knowledge level with the Linux Foundation Certified Kubernetes Application Developer Exam CKAD Exam and earn solid proof of their proven skills.

Linux Foundation Certified Kubernetes Application Developer (CKAD) Certification Exam is designed to test the knowledge and skills of professionals who develop applications using Kubernetes. Kubernetes is a popular open-source platform that simplifies the deployment, scaling, and management of containerized applications. The CKAD Certification is a vendor-neutral certification that is recognized globally and provides a valuable credential for professionals in the application development industry.

Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q38-Q43):

NEW QUESTION # 38
You have a Kubernetes cluster with a namespace called 'dev' and a deployment named 'app-deployment' in that namespace. You need to create a new Role that allows users in the 'developers' group to only scale the Sapp-deployment' deployment. They should not be able to access any other resources in the 'dev' namespace. Implement the RBAC configuration for this scenario.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Role:
- Create a YAML file named 'scale-app-role.yaml' with the following content:

2. Create a RoleBinding: - Create a YAML file named 'scale-app-rolebinding.yaml' with the following content:

3. Apply the configuration: - Apply the Role and Role8inding using the following commands: bash kubectl apply -f scale-app-role.yaml kubectl apply -f scale-app-rolebinding-yaml 4. Verify the configuration: - You can verify the configuration by using the following command: bash kubectl auth can-i --list --as=user:testuser--group-developers--namespace-dev - Replace 'testuser' with the name of a user in the 'developers' group. The output should show only the following permissions: - 'apps/deployments': 'get, "list, 'watch', 'update', 'patch', 'scale' 5. Test the permissions: - Try to scale the Sapp-deployment deployment using the 'kubectr command as a user in the 'developers group. - Try to perform other actions on the deployment or other resources in the 'devs namespace. You should only be able to scale the Sapp-deployment deployment.

NEW QUESTION # 39
Exhibit:

Context
A container within the poller pod is hard-coded to connect the nginxsvc service on port 90 . As this port changes to 5050 an additional container needs to be added to the poller pod which adapts the container to connect to this new port. This should be realized as an ambassador container within the pod.
Task
* Update the nginxsvc service to serve on port 5050.
* Add an HAproxy container named haproxy bound to port 90 to the poller pod and deploy the enhanced pod. Use the image haproxy and inject the configuration located at /opt/KDMC00101/haproxy.cfg, with a ConfigMap named haproxy-config, mounted into the container so that haproxy.cfg is available at /usr/local/etc/haproxy/haproxy.cfg. Ensure that you update the args of the poller container to connect to localhost instead of nginxsvc so that the connection is correctly proxied to the new service endpoint. You must not modify the port of the endpoint in poller's args . The spec file used to create the initial poller pod is available in /opt/KDMC00101/poller.yaml

A. Solution:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
spec:
selector:
matchLabels:
run: my-nginx
replicas: 2
template:
metadata:
labels:
run: my-nginx
spec:
containers:
- name: my-nginx
image: nginx
ports:
- containerPort: 90
This makes it accessible from any node in your cluster. Check the nodes the Pod is running on:
kubectl apply -f ./run-my-nginx.yaml
kubectl get pods -l run=my-nginx -o wide
NAME READY STATUS RESTARTS AGE IP NODE
my-nginx-3800858182-jr4a2 1/1 Running 0 13s 10.244.3.4 kubernetes-minion-905m
my-nginx-3800858182-kna2y 1/1 Running 0 13s 10.244.2.5 kubernetes-minion-ljyd
Check your pods' IPs:
kubectl get pods -l run=my-nginx -o yaml | grep podIP
podIP: 10.244.3.4
podIP: 10.244.2.5
B. Solution:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
spec:
selector:
matchLabels:
run: my-nginx
- name: my-nginx
image: nginx
ports:
- containerPort: 90
This makes it accessible from any node in your cluster. Check the nodes the Pod is running on:
kubectl apply -f ./run-my-nginx.yaml
kubectl get pods -l run=my-nginx -o wide
NAME READY STATUS RESTARTS AGE IP NODE
my-nginx-3800858182-jr4a2 1/1 Running 0 13s 10.244.3.4 kubernetes-minion-905m
my-nginx-3800858182-kna2y 1/1 Running 0 13s 10.244.2.5 kubernetes-minion-ljyd
Check your pods' IPs:
kubectl get pods -l run=my-nginx -o yaml | grep podIP
podIP: 10.244.3.4
podIP: 10.244.2.5

Answer: A

NEW QUESTION # 40
Context

Task:
Create a Deployment named expose in the existing ckad00014 namespace running 6 replicas of a Pod. Specify a single container using the ifccncf/nginx: 1.13.7 image Add an environment variable named NGINX_PORT with the value 8001 to the container then expose port 8001

Answer:

Explanation:
Solution:

NEW QUESTION # 41
Context

Context
It is always useful to look at the resources your applications are consuming in a cluster.
Task
* From the pods running in namespace cpu-stress , write the name only of the pod that is consuming the most CPU to file /opt/KDOBG030l/pod.txt, which has already been created.

Answer:

Explanation:
Solution:

NEW QUESTION # 42
Context

Context
A container within the poller pod is hard-coded to connect the nginxsvc service on port 90 . As this port changes to 5050 an additional container needs to be added to the poller pod which adapts the container to connect to this new port. This should be realized as an ambassador container within the pod.
Task
* Update the nginxsvc service to serve on port 5050.
* Add an HAproxy container named haproxy bound to port 90 to the poller pod and deploy the enhanced pod. Use the image haproxy and inject the configuration located at /opt/KDMC00101/haproxy.cfg, with a ConfigMap named haproxy-config, mounted into the container so that haproxy.cfg is available at /usr/local/etc/haproxy/haproxy.cfg. Ensure that you update the args of the poller container to connect to localhost instead of nginxsvc so that the connection is correctly proxied to the new service endpoint. You must not modify the port of the endpoint in poller's args . The spec file used to create the initial poller pod is available in /opt/KDMC00101/poller.yaml

Answer:

Explanation:
Solution:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
spec:
selector:
matchLabels:
run: my-nginx
replicas: 2
template:
metadata:
labels:
run: my-nginx
spec:
containers:
- name: my-nginx
image: nginx
ports:
- containerPort: 90
This makes it accessible from any node in your cluster. Check the nodes the Pod is running on:
kubectl apply -f ./run-my-nginx.yaml
kubectl get pods -l run=my-nginx -o wide
NAME READY STATUS RESTARTS AGE IP NODE
my-nginx-3800858182-jr4a2 1/1 Running 0 13s 10.244.3.4 kubernetes-minion-905m my-nginx-3800858182-kna2y 1/1 Running 0 13s 10.244.2.5 kubernetes-minion-ljyd Check your pods' IPs:
kubectl get pods -l run=my-nginx -o yaml | grep podIP
podIP: 10.244.3.4
podIP: 10.244.2.5

NEW QUESTION # 43
......

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