CKAD VALID EXAM BOOTCAMP, CKAD QUESTIONS ANSWERS

CKAD Valid Exam Bootcamp, CKAD Questions Answers

CKAD Valid Exam Bootcamp, CKAD Questions Answers

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To prepare for the CKAD Certification Exam, an individual should have hands-on experience in Kubernetes application development. Additionally, the Linux Foundation offers a CKAD training course that provides individuals with the necessary knowledge and skills to pass the certification exam. There are also various online resources and practice exams available that can be used to prepare for the exam.

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Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q95-Q100):

NEW QUESTION # 95
You are running a critical application on Kubernetes, and your security team has mandated the use of Pod Security Policies (PSPs) to enhance the security posture of your cluster. You have a Deployment that uses a privileged container for certain tasks. However, PSPs restrict the use of privileged containers. Describe how you can address this challenge while adhering to the security requirements imposed by PSPs.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Identify the Privileged Container Tasks: Analyze your Deployment and identify the specific tasks performed by the privileged container. These tasks might involve accessing host resources like devices, manipulating network settings, or interacting with the host kernel directly.
2. Explore Alternative Solutions: Instead of relying on privileged containers, consider alternative approaches to achieve the desired functionality:
- Host Network: If the task requires direct network access, consider using the 'hostNetwork' feature. This grants the container access to the host's network stack but doesn't require privileged mode.
- HostPath Volumes: If the task involves accessing host files or directories, mount them into the container using 'hostPath' volumes.
- SecurityContext: Explore the 'securityContext' options for containers. Options like 'capabilities' can grant limited access to specific host resources.
- Dedicated Service Account: Assign a dedicated Service Account to the Deployment with limited permissions, ensuring the container can only access the required resources.
3. Implement PSP with Allowlist:
- Create a PSP that defines a restricted set of security rules. This PSP should allow:
- The specific tasks that require privileged operations.
- Other essential security measures like restricting host network access, SELinux, and AppArmor configurations.
- Apply the PSP to the namespace where your Deployment is running.
4. Update Deployment: Modify your Deployment configuration to utilize the alternative solutions identified in step 2.
- Replace the privileged container with a non-privileged container.
- Utilize 'hostNetwork', 'hostPatW volumes, or 'securityContext' options as needed.
- Ensure the Deployment is properly configured to use the dedicated Service Account.
5. Test and Validate: Verify that the modified Deployment functions as expected and that the chosen alternative solutions meet the original requirements. Additionally, ensure that the PSP is enforcing the desired security policies.
Example:
Original Deployment (with privileged container):

Modified Deployment (using host network):

PSP with allowlist:

Note: This example illustrates one approach to address the challenge. The specific solution will depend on the nature of the privileged container tasks and the security requirements enforced by your PSP. It's essential to thoroughly understand your application's needs and implement the appropriate security measures to ensure both security and functionality. ,


NEW QUESTION # 96

Context
You are tasked to create a ConfigMap and consume the ConfigMap in a pod using a volume mount.
Task
Please complete the following:
* Create a ConfigMap named another-config containing the key/value pair: key4/value3
* start a pod named nginx-configmap containing a single container using the nginx image, and mount the key you just created into the pod under directory /also/a/path See the solution below.

Answer:

Explanation:
Explanation
Solution:






NEW QUESTION # 97
You are building a container image for a Python application that requires a specific version of the 'requests' library. Explain how you would incorporate the 'requests' library into your Dockerfile and ensure that the application can access and use it within the container.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install the 'requests library in the Dockerfile:
- Use the 'RUN' instruction in your Dockerfile to install the library.
- Utilize the 'pip' package manager to install the specific version of requests required by your application.

- Replace with the desired Python base image. - Ensure that the 'requirements-txt file contains the required dependency, specifically 'requests' and its version. - Include the 'COPY' commands to transfer your application code and other files to the container 2. Import and use the 'requests' library in your Python application: - In your Python application code Capp.pys in this example), impon the 'requests' library. - Use the imported library functions to make HTTP requests as needed in your application logic.

3. Build the Docker image: - Execute the 'docker build' command in your terminal, specifying the Dockerfile location and the image tag. docker build -t my-python-app . 4. Run the container: - Use the 'docker run' command to launch the container, providing the image name. docker run -it my-python-app - The container will run your Python application, and the 'requests' library will be available for use within the container environment.


NEW QUESTION # 98
Context

Task:
1) Create a secret named app-secret in the default namespace containing the following single key-value pair:
Key3: value1
2) Create a Pod named ngnix secret in the default namespace.Specify a single container using the nginx:stable image.
Add an environment variable named BEST_VARIABLE consuming the value of the secret key3.

Answer:

Explanation:
Solution:



NEW QUESTION # 99
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 # 100
......

To avail of all these Linux Foundation CKAD certification exam benefits you need to enroll in Linux Foundation CKAD certification exam and pass it with good scores. Are you ready for this? If your answer is right then you do not need to go anywhere. Just download Linux Foundation CKAD Dumps questions and start preparing today.

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