Valid CKA Exam Syllabus | CKA Key Concepts

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Linux Foundation CKA Exam Syllabus Topics:

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

>> Valid CKA Exam Syllabus <<

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q38-Q43):

NEW QUESTION # 38
Perform the following tasks:
Add an init container to hungry-bear (which has been defined in spec file /opt/KUCC00108/pod-spec-KUC C00108.yaml ) The init container should create an empty file named /workdir/calm.txt If /workdir/calm.txt is not detected, the pod should exit Once the spec file has been updated with the init container definition, the pod should be created

Answer:

Explanation:
solution

NEW QUESTION # 39
List the nginx pod with custom columns POD_NAME and POD_STATUS

Answer:

Explanation:
See the solution below.
Explanation
kubectl get po -o=custom-columns="POD_NAME:.metadata.name,
POD_STATUS:.status.containerStatuses[].state"

NEW QUESTION # 40
Create a file called "config.txt" with two values key1=value1
and key2=value2. Then create a configmap named "keyvalcfgmap" andread data from the file "config.txt" and verify that configmap is created correctly

A. cat >> config.txt << EOF
key1=value1
key2=value2
EOF
kubectl create cm keyvalcfgmap --from-file=config.txt
//Verify
kubectl get cm keyvalcfgmap -o yaml
B. cat >> config.txt << EOF
key1=value1
key2=value2
EOF
cat config.txt
// Create configmap from "config.txt" file
kubectl create cm keyvalcfgmap --from-file=config.txt
//Verify
kubectl get cm keyvalcfgmap -o yaml

Answer: B

NEW QUESTION # 41
Get the number of schedulable nodes and write to a file
/opt/schedulable-nodes.txt

A. kubectl get nodes -o jsonpath="{range
.items[*]}{.metadata.name}
{.spec.taints[?(@.effect=='NoSchedule')].effect}{\"\n\"}{end}"
| awk 'NF==11 {print $0}' > /opt/schedulable-nodes.txt
// Verify
cat /opt/schedulable-nodes.txt
B. kubectl get nodes -o jsonpath="{range
.items[*]}{.metadata.name}
{.spec.taints[?(@.effect=='NoSchedule')].effect}{\"\n\"}{end}"
| awk 'NF==1 {print $0}' > /opt/schedulable-nodes.txt
// Verify
cat /opt/schedulable-nodes.txt

Answer: B

NEW QUESTION # 42
You are running a MySQL database on a Kubernetes cluster. You want to ensure that your database data is persistent even if a pod is deleted or restarted. You need to create a PersistentVolumeClaim (PVC) to request a specific storage class with a 1 OGB capacity, access mode of 'ReadWriteOnce', and storage class of 'fast-storage'. Explain the configuration and how to create the PVC and then use the PVC to create a StatefulSet for your MySQL deployment.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a PersistentVolumeClaim:
- Create a YAML file named 'mysql-pvc.yaml' with the following content:

- Apply the YAML file using 'kubectl apply -f mysql-pvc.yamP. 2. Create a StatefulSet for MySQL Deployment: - Create a YAML file named 'mysql-statefulset.yaml' with the following content:

- Apply the YAML file using 'kubectl apply -f mysql-statefulset.yaml'. 3. Verify Deployment: - Check the status of the StatefulSet using 'kubectl get statefulsets mysql'. - Ensure that the pod is running and the PVC is mounted correctly. You can use 'kubectl describe pod mysql-0' to see the details of the pod and the mounted PVC.

NEW QUESTION # 43
......

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