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Linux Foundation CKA Exam Syllabus Topics:

Section	Weight	Objectives
Services & Networking	20%	- Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Understand connectivity between Pods - Understand and use CoreDNS - Define and enforce Network Policies - Know how to use Ingress controllers and Ingress resources - Use the Gateway API to manage Ingress traffic
Troubleshooting	30%	- Troubleshoot cluster component failure - Troubleshoot application failure - Evaluate cluster and node logging - Manage container stdout & stderr logs - Troubleshoot networking - Understand how to monitor applications
Workloads & Scheduling	15%	- Use ConfigMaps and Secrets to configure applications - Use label selectors to schedule Pods - Understand how to run multiple schedulers and configure scheduler policies - Understand Deployments and rolling update/rollback - Understand resource limits and requests - Understand how scheduler works - Understand Static Pods - Understand DaemonSets
Cluster Architecture, Installation & Configuration	25%	- Understand CRDs, install and configure operators - Manage role based access control (RBAC) - Understand extension interfaces (CNI, CSI, CRI, etc.) - Prepare underlying infrastructure for installing a Kubernetes cluster - Implement and configure a highly-available control plane - Manage the lifecycle of Kubernetes clusters - Create and manage Kubernetes clusters using kubeadm - Use Helm and Kustomize to install cluster components
Storage	10%	- Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes - Understand persistent volume claims primitive - Understand volume mode, access modes and reclaim policies

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CKA Test Lab Questions & Reliable CKA Test Sample

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q75-Q80):

NEW QUESTION # 75
You have a Deployment that runs a containerized application. The application requires access to a specific service running in a different namespace. You need to define a NetworkPolicy to allow traffic from the application's Pods to the service in the other namespace only on port 8080.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Network Policy Definition:

2. Explanation: - 'apiVersion: networking.k8s.io/v1 Specifies the API version for NetworkPolicy resources. - 'kind: NetworkPolicy': Specifies that this is a NetworkPolicy resource. - 'metadata.name: allow-service-access': Sets the name of the NetworkPolicy. - 'metadata.namespace: Specifies the namespace where the NetworkPolicy is applied. Replace with the actual namespace where your deployment is running. - 'spec.podSelector.matchLabels: app: application': This selector targets Pods labeled with 'app: application', ensuring the NetworkPolicy applies to the application Pods. - 'spec.egress.to.namespaceSelector.matchLabels: service-namespace: This allows outgoing traffic only to the namespace labeled with 'service-namespace: Replace with the actual namespace of the service. - 'spec.egress.ports.port: 8080': This allows communication only on port 8080. - 'spec.egress.ports.protocol: TCP': Specifies the protocol (TCP) for the allowed port. 3. How it works: - This NetworkPolicy allows outgoing traffic from the application Pods only to the specified service in the different namespace and only on port 8080. It effectively restricts communication from the application Pods to only the intended target service. 4. Implementation: - Apply the YAML using 'kubectl apply -f allow-service-access.yaml' 5. Verification: After applying the NetworkPolicy, test the connectivity from the application Pods to the service in the other namespace on port 8080. You should observe that the NetworkPolicy successfully enforces the restrictions, allowing access only to the specified port and service.]

NEW QUESTION # 76
Ensure a single instance of podnginxis running on each node of theKubernetes cluster wherenginxalso represents the Image name whichhas to be used. Do not override anytaints currently in place.
UseDaemonSetto complete thistask and useds-kusc00201asDaemonSet name.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 77
Create a redis pod named "test-redis" and exec into that pod and create a file named "test-file.txt" with the text 'This is called the test file' in the path /data/redis and open another tab and exec again with the same pod and verifies file exist in the same path.

A. vim test-redis.yaml
apiVersion: v1
kind: Pod
metadata:
name: test-redis
spec:
containers:
- name: redis
image: redis
ports:
- containerPort: 6379
volumeMounts:
- mountPath: /data/redis
name: redis-storage
volumes:
kubectl exec -it test-redis /bin/sh
cd /data/redis
echo 'This is called the test file' > file.txt
//open another tab
kubectl exec -it test-redis /bin/sh
cat /data/redis/file.txt
B. vim test-redis.yaml
apiVersion: v1
kind: Pod
metadata:
name: test-redis
spec:
containers:
- name: redis
image: redis
ports:
- containerPort: 6379
volumeMounts:
- mountPath: /data/redis
name: redis-storage
volumes:
- name: redis-storage
emptyDir: {}
kubectl apply -f redis-pod-vol.yaml
// first terminal
kubectl exec -it test-redis /bin/sh
cd /data/redis
echo 'This is called the test file' > file.txt
//open another tab
kubectl exec -it test-redis /bin/sh
cat /data/redis/file.txt

Answer: B

NEW QUESTION # 78
Install a kubernetes cluster with one master and one worker using kubeadm

A. This is a straightforward question, you need to install kubernetes cluster using kubeadm with one master and one worker.
Refer : https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/
B. This is a straightforward question, you need to install kubernetes cluster using kubeadm with one master and one worker.
Installation is considered success once both master and worker
nodes become available.
Refer : https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/

Answer: B

NEW QUESTION # 79
Set the node namedek8s-node-1asunavailable and reschedule all thepods running on it.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 80
......

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