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Linux Foundation CKA Exam Syllabus Topics:

Section	Weight	Objectives
Cluster Architecture, Installation & Configuration	25%	- Prepare infrastructure for cluster installation - Manage cluster lifecycle and upgrades - Implement high availability control plane - Work with CRDs and Operators - Install components via Helm / Kustomize - Manage RBAC - Create and manage clusters with kubeadm - Understand CNI, CSI, CRI interfaces
Workloads & Scheduling	15%	- Pod scheduling: node selector, affinity, taints/tolerations - Deployments, rolling updates and rollbacks - Resource requests, limits and autoscaling - Configure applications with ConfigMaps and Secrets - Pod lifecycle, init containers, probes
Services & Networking	20%	- Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - CoreDNS and service discovery - Ingress resources and controllers - Network policies - CNI configuration and troubleshooting
Troubleshooting	30%	- Control plane component failures - Pod and application failures - Log collection and analysis - Worker node issues and recovery - Network connectivity and DNS resolution problems - Cluster component health checks
Storage	10%	- Volume types and access modes - StorageClasses and dynamic provisioning - StatefulSet storage configuration - Persistent Volumes (PV) and Persistent Volume Claims (PVC)

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q60-Q65):

NEW QUESTION # 60
Create a deployment as follows:
Name: nginx-app
Using container nginx with version 1.11.10-alpine
The deployment should contain
Next, deploy the application with new version , by performing a rolling update.
Finally, rollback that update to the previous version

Answer:

Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 D.JPG

NEW QUESTION # 61
Create an nginx pod and set an env value as 'var1=val1'. Check the env value existence within the pod

A. kubectl run nginx --image=nginx --restart=Never --env=var1=val1
# then
kubectl exec -it nginx -- env
# or
kubectl exec -it nginx -- sh -c 'echo $var1'
# or
kubectl describe po nginx | grep val1
# or
kubectl run nginx --restart=Never --image=nginx --env=var1=val1
-it --rm - env
B. kubectl run nginx --image=nginx --restart=Never --env=var1=val1
# then
kubectl exec -it nginx -- env
# or
kubectl run nginx --restart=Never --image=nginx --env=var1=val1
-it --rm -- env

Answer: A

NEW QUESTION # 62
Create the deployment redis with image=redis and expose it with "NodePort" service redis-service

A. kubectl create deploy redis --image=redis --dry-run -o yaml >
redis-deploy.yaml
Edit redis-deploy.yaml file
vim redis-deploy.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: redis
name: redis
spec:
replicas: 1
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
containers:
- image: redis
name: redis
//Creating Service
kubectl expose deploy redis --type=NodePort --port=6379 --
target-port=6379 --name redis-service
// Verify
kubectl get deploy,svc
B. kubectl create deploy redis --image=redis --dry-run -o yaml >
redis-deploy.yaml
Edit redis-deploy.yaml file
name: redis
spec:
replicas: 1
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
containers:
- image: redis
name: redis
//Creating Service
kubectl expose deploy redis --type=NodePort --port=6379 --
target-port=6379 --name redis-service
// Verify
kubectl get deploy,svc

Answer: A

NEW QUESTION # 63
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 # 64

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}\n"
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}\n"
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}\n"
http://example.org/echo

NEW QUESTION # 65
......

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