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Linux Foundation CKA Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Services & Networking	20%	- Ingress resources and controllers - CNI configuration and troubleshooting - CoreDNS and service discovery - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Network policies
Topic 2: Troubleshooting	30%	- Cluster component health checks - Network connectivity and DNS resolution problems - Log collection and analysis - Pod and application failures - Control plane component failures - Worker node issues and recovery
Topic 3: Storage	10%	- Persistent Volumes (PV) and Persistent Volume Claims (PVC) - StorageClasses and dynamic provisioning - Volume types and access modes - StatefulSet storage configuration
Topic 4: Workloads & Scheduling	15%	- Resource requests, limits and autoscaling - Pod lifecycle, init containers, probes - Pod scheduling: node selector, affinity, taints/tolerations - Deployments, rolling updates and rollbacks - Configure applications with ConfigMaps and Secrets
Topic 5: Cluster Architecture, Installation & Configuration	25%	- Create and manage clusters with kubeadm - Manage cluster lifecycle and upgrades - Work with CRDs and Operators - Install components via Helm / Kustomize - Manage RBAC - Understand CNI, CSI, CRI interfaces - Implement high availability control plane - Prepare infrastructure for cluster installation

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q81-Q86):

NEW QUESTION # 81
You are setting up RBAC for a Kubernetes cluster with three namespaces: "development", "staging", and "production". You need to create a role binding that allows developers in the "development" namespace to create deployments, pods, and services, but only within their own namespace.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 Create a Role for Developers:

2. Create a Role Binding for Developers:

3. Replace 'developer-user' with the actual username of a developer. 4. Repeat steps 1-3 for other namespaces ("staging" and "production") with appropriate resource permissions and user names. 5. Verify the RBAC configuration: - Check that the roles and rolebindings are created successfully using 'kubectl get roles' and 'kubectl get rolebindings'. - Test the permissions by creating a pod, deployment, or service as a developer user in their respective namespaces. 6. If you encounter issues, review the configuration carefully, making sure the namespaces, roles, role bindings, and user names are correct.

NEW QUESTION # 82
Score: 7%

Task
Given an existing Kubernetes cluster running version 1.20.0, upgrade all of the Kubernetes control plane and node components on the master node only to version 1.20.1.
Be sure to drain the master node before upgrading it and uncordon it after the upgrade.

You are also expected to upgrade kubelet and kubectl on the master node.

Answer:

Explanation:
See the solution below.
Explanation
SOLUTION:
[student@node-1] > ssh ek8s
kubectl cordon k8s-master
kubectl drain k8s-master --delete-local-data --ignore-daemonsets --force apt-get install kubeadm=1.20.1-00 kubelet=1.20.1-00 kubectl=1.20.1-00 --disableexcludes=kubernetes kubeadm upgrade apply 1.20.1 --etcd-upgrade=false systemctl daemon-reload systemctl restart kubelet kubectl uncordon k8s-master

NEW QUESTION # 83
Deployment
a. Create a deployment of webapp with image nginx:1.17.1 with
container port 80 and verify the image version

A. // Create initial YAML file with -dry-run option
kubectl create deploy webapp --image=nginx:1.17.1 --dryrun=client -o yaml > webapp.yaml vim webapp.yaml apiVersion: apps/v1 kind: Deployment metadata:
labels:
app: webapp
name: webapp
spec: replicas: 1 containers: - image: nginx:1.17.1 name: nginx kubectl create -f webapp.yaml -record=true //Verify Image Version kubectl describe deploy webapp | grep -i "Image" Using JsonPath kubectl get deploy -o=jsonpath='{range.items [*]}{.[*]} {.metadata.name}{"\t"}{.spec.template.spec.containers[*].i mage}{"\n"}'
B. // Create initial YAML file with -dry-run option
kubectl create deploy webapp --image=nginx:1.17.1 --dryrun=client -o yaml > webapp.yaml vim webapp.yaml apiVersion: apps/v1 kind: Deployment metadata:
labels:
app: webapp
name: webapp
spec: replicas: 1 selector: matchLabels: app: webapp template: metadata: labels: app: webapp spec: containers: - image: nginx:1.17.1 name: nginx kubectl create -f webapp.yaml -record=true //Verify Image Version kubectl describe deploy webapp | grep -i "Image" Using JsonPath kubectl get deploy -o=jsonpath='{range.items [*]}{.[*]} {.metadata.name}{"\t"}{.spec.template.spec.containers[*].i mage}{"\n"}'

Answer: B

NEW QUESTION # 84
Ensure a single instance of pod nginx is running on each node of the Kubernetes cluster where nginx also represents the Image name which has to be used. Do not override any taints currently in place.
Use DaemonSet to complete this task and use ds-kusc00201 as DaemonSet name.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 85
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.
Installation is considered success once both master and worker
nodes become available.
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.
Refer : https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/

Answer: A

NEW QUESTION # 86
......

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