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Linux Foundation KCNA Exam Syllabus Topics:

SectionObjectives
Topic 1: Kubernetes Fundamentals- Core Kubernetes concepts
  • 1. Cluster architecture overview
    • 2. Pods, nodes, and control plane basics
      Topic 2: Container Orchestration- Container lifecycle and scheduling
      • 1. Container runtimes
        • 2. Workload management concepts
          Topic 3: Cloud Native Application Delivery- CI/CD and deployment strategies
          • 1. GitOps concepts
            • 2. Release strategies (blue/green, canary)
              Topic 4: Cloud Native Architecture- Microservices and distributed systems
              • 1. Scalability and resilience patterns
                • 2. Service discovery and API gateways
                  Topic 5: Cloud Security and Governance- Security fundamentals in cloud native systems
                  • 1. Identity and access concepts
                    • 2. Basic Kubernetes security principles
                      Topic 6: Cloud Native Observability- Monitoring and logging
                      • 1. Observability tools overview
                        • 2. Metrics, logs, and tracing concepts

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                          Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q232-Q237):

                          NEW QUESTION # 232
                          Which mechanism allows extending the Kubernetes API?

                          Answer: B

                          Explanation:
                          The correct answer is B: CustomResourceDefinition (CRD). Kubernetes is designed to be extensible. A CRD lets you define your own resource types (custom API objects) that behave like native Kubernetes resources: they can be created with YAML, stored in etcd, retrieved via the API server, and managed using kubectl. For example, operators commonly define CRDs such as Databases, RedisClusters, or Certificates to model higher-level application concepts.
                          A CRD extends the API by adding a new kind under a group/version (e.g., example.com/v1). You typically pair CRDs with a controller (often called an operator) that watches these custom objects and reconciles real-world resources (Deployments, StatefulSets, cloud resources) to match the desired state specified in the CRD instances. This is the same control-loop pattern used for built-in controllers-just applied to your custom domain.
                          Why the other options aren't correct: ConfigMaps store configuration data but do not add new API types. A MutatingAdmissionWebhook can modify or validate requests for existing resources, but it doesn't define new API kinds; it enforces policy or injects defaults. Kustomize is a manifest customization tool (patch/overlay) and doesn't extend the Kubernetes API surface.
                          CRDs are foundational to much of the Kubernetes ecosystem: cert-manager, Argo, Istio, and many operators rely heavily on CRDs. They also support schema validation via OpenAPI v3 schemas, which improves safety and tooling (better error messages, IDE hints). Therefore, the mechanism for extending the Kubernetes API is CustomResourceDefinition, option B.


                          NEW QUESTION # 233
                          Which of the following computing model doesn't require you to provision infrastructure?

                          Answer: A

                          Explanation:


                          NEW QUESTION # 234
                          Which of the following resources helps in managing a stateless application workload on a Kubernetes cluster?

                          Answer: A

                          Explanation:
                          A Deployment manages stateless application workloads by ensuring the desired number of pod replicas are running and handling updates and rollbacks.


                          NEW QUESTION # 235
                          Which command updates the image of a running deployment without recreating the resource?

                          Answer: B

                          Explanation:
                          The kubectl set image command updates the container image of an existing Deployment and triggers a rolling update, changing the running Pods without deleting and recreating the Deployment resource itself.


                          NEW QUESTION # 236
                          What do GitOps tools do in kubernetes?

                          Answer: B

                          Explanation:
                          https://fluxcd.io/docs/components/


                          NEW QUESTION # 237
                          ......

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