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[General] Exam Linux Foundation CKA Objectives - CKA Actual Exam Dumps

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【General】 Exam Linux Foundation CKA Objectives - CKA Actual Exam Dumps

Posted at yesterday 14:30      View：22 | Replies：0        Print      Only Author   [Copy Link] 1#
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The CKA exam is a hands-on, performance-based exam that requires candidates to demonstrate their knowledge of Kubernetes administration through the use of practical tasks and challenges. CKA exam is designed to test an individual's ability to configure and manage Kubernetes clusters, troubleshoot common issues, and deploy applications using Kubernetes. CKA Exam is administered online and can be taken from anywhere in the world.
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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q54-Q59):NEW QUESTION # 54
Check nodes which are ready and print it to a file /opt/nodestatus
  • A. JSONPATH='{range .items
  • }{@.metadata.name}:{range
    @.status.conditions
  • }{@.type}={@.status};{end}{end}'
    //Verify
    cat /opt/node-status
  • B. JSONPATH='{range .items
  • }{@.metadata.name}:{range
    @.status.conditions
  • }{@.type}={@.status};{end}{end}'
    && kubectl get nodes -o jsonpath="$JSONPATH" | grep
    "Ready=True" > /opt/node-status
    //Verify
    cat /opt/node-status
Answer: B

NEW QUESTION # 55
Create a pod named kucc8 with a single app container for each of the following images running inside (there may be between 1 and 4 images specified):
nginx + redis + memcached.
Answer:
Explanation:
solution




NEW QUESTION # 56

Task
Create a new Ingress resource as follows:
. Name: echo
. Namespace : sound-repeater
. Exposing Service echoserver-service on
http://example.org/echo
using Service port 8080
The availability of Service
echoserver-service can be checked
i
using the following command, which should return 200 :
[candidate@cka000024] $ curl -o /de v/null -s -w "%{http_code}"
http://example.org/echo
Answer:
Explanation:
Task Summary
Create an Ingress named echo in the sound-repeater namespace that:
* Routes requests to /echo on host example.org
* Forwards traffic to service echoserver-service
* Uses service port 8080
* Verification should return HTTP 200 using curl
# Step-by-Step Answer
1## SSH into the correct node
As shown in the image:
bash
CopyEdit
ssh cka000024
## Skipping this will result in a ZERO score!
2## Verify the namespace and service
Ensure the sound-repeater namespace and echoserver-service exist:
kubectl get svc -n sound-repeater
Look for:
echoserver-service ClusterIP ... 8080/TCP
3## Create the Ingress manifest
Create a YAML file: echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
4## Apply the Ingress resource
kubectl apply -f echo-ingress.yaml
5## Test with curl as instructed
Use the exact verification command:
curl -o /dev/null -s -w "%{http_code}"
http://example.org/echo
# You should see:
200
# Final Answer Summary
ssh cka000024
kubectl get svc -n sound-repeater
# Create the Ingress YAML
cat <<EOF > echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
EOF
kubectl apply -f echo-ingress.yaml
curl -o /dev/null -s -w "%{http_code}"
http://example.org/echo

NEW QUESTION # 57
You are deploying a new microservice to your Kubernetes cluster. This service needs to communicate with another service within the same cluster. You want to ensure that the communication between the two services is secure and reliable. Which container network interface plugin would you choose for this scenario and why?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Choose the appropriate Container Network Interface Plugin:
- For secure and reliable communication between services within the same Kubernetes cluster, the Calico container network interface plugin is a recommended choice.
2. Reasons for choosing Calico:
- Security: Calico provides robust network security features like network policies that allow you to define fine- grained access control rules between pods and services. This ensures secure communication only between authorized entities.
- Reliability: Calico offers high availability and reliability. It uses a distributed architecture and supports BGP for efficient routing and load balancing, leading to resilient network connectivity.
- Ease of Use: Calico integrates seamlessly with Kubernetes and is easy to configure and manage.
- Scalability: It's highly scalable, enabling you to manage large and complex Kubernetes environments.
3. Example Implementation:
- Install Calico: Use the 'kubectl' command to install Calico on your Kubernetes cluster:
kubectl apply -f https://docs.projectcalico.org/v3.19/getting-
started/kubernetes/installation/l .8+/manifests/calico.yaml
- Define Network Policies: Create network policies to control communication between your services. Here's an example:

This policy allows pods labeled 'app: microservice? to communicate with pods labeled 'app: microservice? within the 'default' namespace. 4. Verify the Configuration: - Use 'kubectl get networkpolicies' to list the defined network policies. - Test communication between your services. Note: Calico is a popular and highly regarded choice for Kubernetes networking. However, other plugins like Flannel and Weave are also viable options, depending on your specific requirements and preferences. ,

NEW QUESTION # 58
Check to see how many worker nodes are ready (not including nodes tainted NoSchedule) and write the number to /opt/KUCC00104/kucc00104.txt.
Answer:
Explanation:
See the solution below.
Explanation
solution
F:WorkData Entry WorkData Entry‚00827CKA B.JPG

F:WorkData Entry WorkData Entry‚00827CKA C.JPG


NEW QUESTION # 59
......
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