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| Certification Vendor: | Linux Foundation |
|---|---|
| Exam Name: | Linux Foundation Certified Kubernetes Application Developer Exam |
| Exam Number: | CKAD |
| Passing Score: | 66% |
| Related Certifications: | Certified Kubernetes Administrator (CKA) Certified Kubernetes Security Specialist (CKS) |
| Exam Duration: | 120 minutes |
| Real Exam Qty: | 15-20 performance-based tasks |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Exam Format: | Kubernetes CLI-based tasks, Online proctored, Performance-based, Hands-on lab exam |
| Exam Price: | USD 395 |
| Recommended Training: | CKAD Exam Preparation Course (Linux Foundation) |
| Exam Registration: | Linux Foundation Certification Portal |
| Sample Questions: | Linux Foundation CKAD Sample Questions |
| Exam Way: | Online proctored, remote performance-based lab environment |
| Pre Condition: | No formal prerequisites, but hands-on Kubernetes experience recommended |
| Official Syllabus URL: | https://training.linuxfoundation.org/certification/certified-kubernetes-application-developer-ckad/ |
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The CKAD Exam is a hands-on, performance-based exam, which means that candidates will be required to complete a set of tasks in a live Kubernetes cluster. CKAD exam is two hours long and covers a wide range of topics, including Kubernetes architecture, core concepts, configuration, and troubleshooting. Candidates are required to demonstrate their knowledge and proficiency in working with Kubernetes resources such as pods, services, deployments, and volumes.
NEW QUESTION # 164
Refer to Exhibit.
Set Configuration Context:
[student@node-1] $ | kubectl
Config use-context k8s
Context
A web application requires a specific version of redis to be used as a cache.
Task
Create a pod with the following characteristics, and leave it running when complete:
* The pod must run in the web namespace.
The namespace has already been created
* The name of the pod should be cache
* Use the Ifccncf/redis image with the 3.2 tag
* Expose port 6379
Answer:
Explanation:
Solution:
NEW QUESTION # 165
You are building a microservice that requires a specific configuration file to be mounted into the container This configuration file should be updated witnout restarting tne microservice container. How can you achieve this using Kubernetes?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. use ConfigMaps:
- Create a 'ConfigMap' to store the configuration file.
- Create a YAML file (e.g., 'config.yamIS) with your configuration content:
2. Mount the ConfigMap: - In your 'Deployment definition, mount the 'configMap' into the container using a volume mount
3. Update the Configuration: - IJpdate the 'ConfigMap' directly using ' kubectl patch configmap my-microservice-config -type-merge -p '{"data": {"config-json"' "updated - The changes will be reflected in the mounted volume inside the container. 4. Access the Configuration: - Your microservice code should read the configuration file from the mounted path (e.g., '/etc/config')- Note: This approach avoids restarting the container when you need to update the configuration. The 'ConfigMaps acts as a persistent volume, and changes to its content are automatically reflected in the mounted volume inside the container
NEW QUESTION # 166
You have a web application that requires a dedicated load balancer to handle incoming traffic and distribute requests across multiple pods- HOW can you set up a dedicated load balancer in Kubernetes using a 'Services and Ingress?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Deployment:
- Create a 'Deployment for your web application.
- Specify the number of replicas, image, and any other necessary configuration.
2. Define a Service: - Create a 'service' to expose your 'Deployment' and provide a load balancing endpoint. - Specify the 'selector to match the labels of your pods and use 'type: Load8alancer' to request a dedicated load balancer from your cloud provider.
3. Configure an Ingress: - Create an 'Ingress' Object to handle incoming traffic and route it to the correct service. - Specify the 'hostname' for your web application and the 'backend' service to which the requests should be forwarded.
4. Apply the Configuration: - Apply the 'Deployment', 'service', and 'Ingress' definitions using 'kubectl apply' or 'kubectl create' 5. Access Your Application: - Once the 'Ingress' is configured, you can access your web application using the specified hostname (e.g., 'my-web-app-example.com'). The load balancer will distribute tne traffic across the available pods of your web application. Note: The 'type: LoadBalancer' service will create a dedicated load balancer in your cloud provider, which will be accessible through an external IP address. The 'Ingress' object will map the hostname to this load balancer, routing traffic to your web application pods.
NEW QUESTION # 167
You have a Deployment named 'web-app-deployments that runs a web application in a containerized environment. The application is designed for high availability and scalability, but you need to ensure that no more than two pods are ever terminated simultaneously during a rolling update process. This is to minimize the impact on service availability during the update. How would you implement this rolling update strategy using Deployment resources?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Update the Deployment YAML:
- Modify the 'strategy.roIIinglJpdate' section of the Deployment YAML to configure the rolling update behavior.
- Set 'maxunavailable: 1 ' to allow only one pod to be unavailable at a time during the update.
- Set 'maxSurge: 1 ' to permit only one additional pod to be created beyond the desired replica count during the update.
2. Apply the Updated Deployment: - Use ' kubectl apply -f web-app-deployment-yamr to update the Deployment. 3. Monitor the Rolling Update: - Observe the pod updates using 'kubectl get pods -I app=web-app' - You will see that during the rolling update, only one pod is terminated, while one new pod is created, ensuring that no more than two pods are ever terminated at the same time. 4. Verify the Update: - Once the rolling update is complete, check the 'updatedReplicaS field in the Deployment description Ckubectl describe deployment web-app- deployment) to verify that it matches the 'replicas' field.
NEW QUESTION # 168
You have a Deployment named 'database-deployment' that runs a PostgreSQL database container. You want to enforce the following security restrictions:
- The container should only be allowed to run with the I-IID 1000.
- The container should be able to access a specific hostPath volume mounted at '/db-data' for storing database data.
- The container should not be allowed to escalate privileges.
- The container should only have the 'NET BIND SERVICE capability, allowing it to listen on specific ports.
You need to define a SecurityContext in the Deployment configuration to enforce these restrictions.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the SecurityContext
- Create a 'securitycontext' section within the 'spec-template-spec-containers' block for your 'database-deployment container-
- Set 'runAsIJsers to '1000' to enforce running as UID 1000.
- Set 'allowPrivilegeEscalation' to 'false' to disable privilege escalation-
- In the 'capabilities' sectiom
- Set 'drop' to an array containing all capabilities except 'NET BIND_SERVICE'
- Set 'add' to an array containing 'NET BIND SERVICE
- Define a 'volumeMount' to mount the '/db-data' hostPath volume.
Solution (Step by Step) :
1. Define the SecurityContext:
- Create a 'securityContext' section within the block for your 'database-deployment container.
- Set 'runAslJser' to "1000' to enforce running as UID 1000.
- Set 'allowPriviIegeEscaIation' to 'false' to disable privilege escalation.
- In the 'capabilities' section:
- Set 'drop' to an array containing all capabilities except 'NET BIND SERVICE
- Set 'add' to an array containing
- Define a 'volumeMount' to mount the '/db-data' hostPath volume.
2. Create the Deployment: - Apply the Deployment YAML file using 'kubectl apply -f database-deployment.yaml. - The 'securityContext' restricts the container's benavior and capabilities. - Setting 'runAslJser' to '1000' forces the container to run as the specified UID. - 'allowPrivilegeEscalation' set to 'false' prevents tne container from gaining higner privileges. - The 'capabilities' section controls specific capabilities. 'drop' removes unwanted capabilities, while 'add' grants specific capabilities. In this case, the container is allowed to use the capability, enabling it to bind to specific ports. - The 'volumeMount defines the mount point for the hostPath volume, providing access to the specified directory tor database data. This configuration ensures that the 'database-deployment container runs with the specific IJID, cannot escalate privileges, and only has the 'NET BIND SERVICE' capability, while accessing the hostPath volume for database data. This provides a secure environment for your database container.,
NEW QUESTION # 169
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