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Linux Foundation KCNA Exam Syllabus Topics:

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

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                          Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q101-Q106):

                          NEW QUESTION # 101
                          What is Open Container Initiative 'OCI'?

                          Answer: A

                          Explanation:
                          https://opencontainers.org/


                          NEW QUESTION # 102
                          Which control plane component is responsible for updating the node Ready condition if a node becomes unreachable?

                          Answer: C

                          Explanation:
                          The correct answer is B: the node controller. In Kubernetes, node health is monitored and reflected through Node conditions such as Ready. The Node Controller (a controller that runs as part of the control plane, within the controller-manager) is responsible for monitoring node heartbeats and updating node status when a node becomes unreachable or unhealthy.
                          Nodes periodically report status (including kubelet heartbeats) to the API server. The Node Controller watches these updates. If it detects that a node has stopped reporting within expected time windows, it marks the node condition Ready as Unknown (or otherwise updates conditions) to indicate the control plane can't confirm node health. This status change then influences higher-level behaviors such as Pod eviction and rescheduling: after grace periods and eviction timeouts, Pods on an unhealthy node may be evicted so the workload can be recreated on healthy nodes (assuming a controller manages replicas).
                          Option A (kube-proxy) is a node component for Service traffic routing and does not manage node health conditions. Option C (kubectl) is a CLI client; it does not participate in control plane health monitoring. Option D (kube-apiserver) stores and serves Node status, but it doesn't decide when a node is unreachable; it persists what controllers and kubelets report. The "decision logic" for updating the Ready condition in response to missing heartbeats is the Node Controller's job.
                          So, the component that updates the Node Ready condition when a node becomes unreachable is the node controller, which is option B.


                          NEW QUESTION # 103
                          You are working on a Kubernetes deployment for a microservices-based application. You need to enforce consistent configuration across different environments (development, staging, production). Which of the following approaches is most appropriate?

                          Answer: E

                          Explanation:
                          Kubernetes ConfigMaps provide a native mechanism for storing and managing configuration data in a central location. This allows for consistent configuration across different environments and simplifies the process of updating configurations without modifying the application code.


                          NEW QUESTION # 104
                          Kubernetes ___ allows you to automatically manage the number of nodes in your cluster to meet demand.

                          Answer: D


                          NEW QUESTION # 105
                          Which are the core features provided by a service mesh?

                          Answer: B

                          Explanation:
                          A service mesh primarily provides features like authentication and authorization to secure service-to-service communication within a microservices architecture.


                          NEW QUESTION # 106
                          ......

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