100% Pass Quiz Linux Foundation - CKA–High-quality Reliable Test Labs
100% Pass Quiz Linux Foundation - CKA–High-quality Reliable Test Labs
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The Certified Kubernetes Administrator (CKA) Program Certification Exam is an industry-leading certification program offered by the Linux Foundation. Certified Kubernetes Administrator (CKA) Program Exam certification is designed for IT professionals who want to demonstrate their expertise in Kubernetes, an open-source container orchestration platform. Kubernetes has become the de facto standard for container orchestration, and organizations around the world are hiring professionals who are proficient in Kubernetes to manage their containerized workloads.
Objective of CNCF CKA Certification Exam
The CNCF Certified Kubernetes Administrator exam tests knowledge on deploying, managing, and troubleshooting applications on Kubernetes clusters. Software engineers will need to understand key concepts of Kubernetes in order to pass the CNCF Certified Kubernetes Administrator exam. Files and containers running on the cluster will be managed by Kubernetes using its object-store. Understand key features of Kubernetes and how it is a paradigm shift in the way software engineers manage containerized applications. Learning about Kubernetes will be crucial for passing the CNCF Certified Kubernetes Administrator exam. Highly recommended to check out the official study guide. Technical manuals and practice questions can be found on the website. Functional knowledge of Kubernetes is crucial for passing the CNCF Certified Kubernetes Administrator exam.
The CKA Certification Exam is a challenging test that requires candidates to demonstrate their mastery of Kubernetes. CKA exam covers a wide range of topics, including installation, configuration, and management of Kubernetes clusters. It also tests a candidate's ability to work with the Kubernetes API, troubleshoot common issues, and perform advanced tasks such as scaling and rolling updates.
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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q61-Q66):
NEW QUESTION # 61
You have a Deployment named 'postgres-deployment' running a PostgreSQL database server. You need to configure the PostgreSQL server with a specific configuration file stored in a ConfigMap named postgres-config'. The configuration file includes sensitive information like the PostgreSQL superuser password. How can you securely store and mount this sensitive information without compromising security?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the ConfigMap:
- Create a ConfigMap named 'postgres-config' containing the PostgreSQL configuration file (e.g., postgresql.conf). This file will likely contain the superuser password as a plain-text value. Create the ConfigMap using 'kubectl create configmap' with the '--from-file' flag:
kubectl create configmap postgres-config --from-file=postgresql.conf
2. Use a Secret for Sensitive Data:
- Create a Secret named postgres-password' to securely store the PostgreSQL superuser password. Use
'kubectl create secret generic' with the '--from-literal' flag:
kubectl create secret generic postgres-password --from-literal=postgres-password="your_postgres_password"
3. Modify the ConfigMap:
- Update the 'postgres-config' ConfigMap by replacing the plain-text password in the 'postgresql.conf with a placeholder or environment variable reference. This prevents the password from being exposed in plain text in the ConfigMap:
kubectl patch configmap postgres-config -p '{"data": {"postgresql.conf": "password =
'$POSTGRES PASSWORD' "}}'
4. Configure the Deployment:
- Modify the 'postgres-deployment' Deployment to mount both the 'postgres-config' ConfigMap and 'postgres- password' Secret as volumes in the Pod template. Use 'volumeMounts' to specify the mount paths and 'volumes' to define the volume sources:
5. Apply the Changes: - Apply the modified Deployment YAML using 'kubectl apply -f postgres-deployment.yamr. 6. Verify the Configuration: - Verify that the PostgreSQL container is using the secure password from the Secret by connecting to the PostgreSQL instance and attempting to authenticate. ]
NEW QUESTION # 62
You have a Kubernetes cluster with a NodePort service exposing a web application on port 30080. You need to restrict access to this service from specific IP addresses (192.168.1.10 and 10.0.0.1) using NetworkPolicy.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Create the necessary NetworkPolicy to enforce this restriction.
Solution (Step by Step) :
Step 1: Create a NetworkPolicy to restrict access to the web application service.
Step 2: Apply the NetworkPolicy to the cluster. kubectl apply -f web-app-access-restriction.yaml This NetworkPolicy will restrict ingress traffic to the web application service to only the specified IP addresses. The 'podSelector: {F ensures that this policy applies to all pods in the 'default' namespace. The 'egress' section allows all outbound traffic from the pods. Now, only the specified IP addresses can access the web application service exposed through NodePort.,
NEW QUESTION # 63
Create a busybox pod and add "sleep 3600" command
Answer:
Explanation:
See the solution below.
Explanation
kubectl run busybox --image=busybox --restart=Never -- /bin/sh -c
"sleep 3600"
NEW QUESTION # 64
Score: 4%
Task
Set the node named ek8s-node-1 as unavailable and reschedule all the pods running on it.
Answer:
Explanation:
See the solution below.
Explanation
SOLUTION:
[student@node-1] > ssh ek8s
kubectl cordon ek8s-node-1
kubectl drain ek8s-node-1 --delete-local-data --ignore-daemonsets --force
NEW QUESTION # 65
Create a Job with an image node which prints node version and
verifies there is a pod created for this job
- A. kubectl create job nodeversion --image=node -- node -v
kubectl get job -w
kubectl get pod
YAML File:
apiVersion: batch/v1
kind: Job
metadata:
labels:
job-name: nodeversion
name: nodeversion
spec:
completions: 1
parallelism: 1
labels:
job-name: nodeversion
spec:
containers:
- command:
- node
- -v
image: node
imagePullPolicy: Always
name: nodeversion
restartPolicy: Never - B. kubectl create job nodeversion --image=node -- node -v
kubectl get job -w
kubectl get pod
YAML File:
apiVersion: batch/v1
kind: Job
metadata:
labels:
job-name: nodeversion
name: nodeversion
spec:
completions: 1
parallelism: 1
selector:
matchLabels:
job-name: nodeversion
template:
metadata:
labels:
job-name: nodeversion
spec:
containers:
- command:
- node
- -v
image: node
imagePullPolicy: Always
name: nodeversion
restartPolicy: Never
Answer: B
NEW QUESTION # 66
......
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