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Updated Linux Foundation CKA Questions - Fast Track To Get Success

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The CKA program is an essential certification for anyone who works with Kubernetes. It provides a rigorous and comprehensive assessment of an individual's ability to work with Kubernetes in a production environment. Certified Kubernetes Administrator (CKA) Program Exam certification is widely recognized by employers, clients, and peers, and is an excellent way for individuals to demonstrate their skills and knowledge to potential employers. If you're interested in working with Kubernetes, the CKA program is an excellent way to validate your expertise and enhance your career prospects.

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CNCF Certified Kubernetes Administrator Exam Details

The CNCF Certified Kubernetes Administrator exam is a 90-minute, 60-multiple choice question test that will be administered at one of Brightworks locations. The official study guide will contain a large portion of the available questions. The client preparation for this exam will be performed through simulated test-taking. Content of the exam will be strictly limited to material covered in the official study guide. Class time will be used for a detailed walk-through of this study guide. Appearing in the actual exam, some questions will be presented in a form of diagram or table to test knowledge of best practices for specific applications. Complete preparation for the exam should include the use of a Kubernetes cloud platform such as kubeadm to test infrastructure in a learn-by-doing approach. Limited to one attempt, rescheduling of exams is possible only in the event of an emergency.

Windows, Linux, and MacOS are all supported for this exam. Verified cloud platforms for this exam include:

Linux Foundation CKA (Certified Kubernetes Administrator) Program Exam is an industry-recognized certification program for IT professionals who want to demonstrate their skills in managing and deploying Kubernetes clusters. CKA exam is designed to test the skills and knowledge required to successfully deploy, manage, and troubleshoot Kubernetes clusters.

Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q17-Q22):

NEW QUESTION # 17
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 # 18
Create a pod as follows:
* Name:non-persistent-redis
* container Image:redis
* Volume with name:cache-control
* Mount path:/data/redis
The pod should launch in thestagingnamespace and the volumemust notbe persistent.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 19
Get the DNS records for the service and pods for the deployment redis and the put the value in /tmp/dnsrecordpod and /tmp/dnsrecord-service

A. // Get Pod Ip
kubectl get po -o wide
// Get Service Name
kubectl get svc
// Create a temporary pod and execute nslookup command
Note: POD IP format should be a-b-c-d and not a.b.c.d
kubectl run busybox --image=busybox:1.28 --restart=Never -
-rm -it -- nslookup 192-168-0-69.default.pod >
/tmp/dnsrecord-pod
kubectl run busybox1 --image=busybox:1.26 --restart=Never
--rm -it -- nslookup redis-service > /tmp/dnsrecordservice
//Verify
cat /tmp/dnsrecord-pod
Server: 10.2.8.10
Address 1: 10.2.0.10 kube-dns.kube system.svc.cluster.local Name: 192-168-0-69.default.pod Address 1: 192.168.0.69 192-166-0-69.redis service.default.svc.cluster.local cat /tmp/dnsrecord-pod Server: 10.2.0.10 Address 1: 10.2.0.10 kube-dns.kube system.svc.cluster.local Name: 192-168-0-69.default.pod Address 1: 192.168.0.69 192-168-0-69.redis service.default.svc.cluster.local
B. // Get Pod Ip
kubectl get po -o wide
// Get Service Name
kubectl get svc
// Create a temporary pod and execute nslookup command
Note: POD IP format should be a-b-c-d and not a.b.c.d
kubectl run busybox --image=busybox:1.28 --restart=Never -
-rm -it -- nslookup 192-168-0-69.default.pod >
/tmp/dnsrecord-pod
kubectl run busybox1 --image=busybox:1.28 --restart=Never
--rm -it -- nslookup redis-service > /tmp/dnsrecordservice
//Verify
cat /tmp/dnsrecord-pod
Server: 10.2.0.10
Address 1: 10.2.0.10 kube-dns.kube system.svc.cluster.local Name: 192-168-0-69.default.pod Address 1: 192.168.0.69 192-168-0-69.redis service.default.svc.cluster.local cat /tmp/dnsrecord-pod Server: 10.2.0.10 Address 1: 10.2.0.10 kube-dns.kube system.svc.cluster.local Name: 192-168-0-69.default.pod Address 1: 192.168.0.69 192-168-0-69.redis service.default.svc.cluster.local

Answer: B

NEW QUESTION # 20
Score: 4%

Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd

Answer:

Explanation:
Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml

NEW QUESTION # 21
Score: 4%

Task
Scale the deployment presentation to 6 pods.

Answer:

Explanation:
Solution:
kubectl get deployment
kubectl scale deployment.apps/presentation --replicas=6

NEW QUESTION # 22
......

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Sophia Murphy Sophia Murphy

Biography

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