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Linux Foundation KCNA Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Cloud Native Architecture16%- Cloud Native Principles
  • 1. 12-factor applications
    • 2. Microservices design
      - Ecosystem & Landscape
      • 1. CNCF projects overview
        • 2. Serverless, service mesh concepts
          Topic 2: Container Orchestration22%- Orchestration Principles
          • 1. Why orchestration matters
            • 2. Runtime environments
              - Security & Troubleshooting
              • 1. Security fundamentals
                • 2. Basic troubleshooting methods
                  - Networking & Storage
                  • 1. Cluster networking model
                    • 2. Persistent storage concepts
                      Topic 3: Cloud Native Observability8%- Logging & Tracing
                      • 1. Centralized logging
                        • 2. Distributed tracing basics
                          - Monitoring & Metrics
                          • 1. Core observability signals
                            • 2. Tools and standards
                              Topic 4: Cloud Native Application Delivery8%- Deployment Strategies
                              • 1. Rolling updates, canary releases
                                • 2. Application lifecycle management
                                  - Delivery Models
                                  • 1. GitOps principles
                                    • 2. CI/CD pipelines
                                      Topic 5: Kubernetes Fundamentals46%- Kubernetes Core Concepts
                                      • 1. Pods, Controllers, Services
                                        • 2. Cluster architecture and components
                                          • 3. API resources and objects
                                            - Containerization Basics
                                            • 1. Containers vs VMs
                                              • 2. Images and registries
                                                - Scheduling and Administration
                                                • 1. Basic kubectl operations
                                                  • 2. Scheduler concepts

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                                                    Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q244-Q249):

                                                    NEW QUESTION # 244
                                                    What is the name of the Kubernetes resource used to expose an application?

                                                    Answer: B

                                                    Explanation:
                                                    To expose an application running on Pods so that other components can reliably reach it, Kubernetes uses a Service, making B the correct answer. Pods are ephemeral: they can be recreated, rescheduled, and scaled, which means Pod IPs change. A Service provides a stable endpoint (virtual IP and DNS name) and load- balances traffic across the set of Pods selected by its label selector.
                                                    Services come in multiple forms. The default is ClusterIP, which exposes the application inside the cluster.
                                                    NodePort exposes the Service on a static port on each node, and LoadBalancer (in supported clouds) provisions an external load balancer that routes traffic to the Service. ExternalName maps a Service name to an external DNS name. But across these variants, the abstraction is consistent: a Service defines how to access a logical group of Pods.
                                                    Option A (Port) is not a Kubernetes resource type; ports are fields within resources. Option C (DNS) is a supporting mechanism (CoreDNS creates DNS entries for Services), but DNS is not the resource you create to expose the app. Option D (Deployment) manages Pod replicas and rollouts, but it does not directly provide stable networking access; you typically pair a Deployment with a Service to expose it.
                                                    This is a core cloud-native pattern: controllers manage compute, Services manage stable connectivity, and higher-level gateways like Ingress provide L7 routing for HTTP/HTTPS. So, the Kubernetes resource used to expose an application is Service (B).
                                                    =========


                                                    NEW QUESTION # 245
                                                    How are ConfigMap s correctly used in Kubernetes applications?

                                                    Answer: C

                                                    Explanation:
                                                    A ConfigMap stores non-sensitive configuration data that can be injected into Pods as environment variables or mounted as files, allowing applications to consume configuration without modifying container images.


                                                    NEW QUESTION # 246
                                                    What is not semantic versioning?

                                                    Answer: D

                                                    Explanation:
                                                    https://semver.org/
                                                    RegEx SemVer at https://regex101.com/r/vkijKf/1/


                                                    NEW QUESTION # 247
                                                    Which of the following Kubernetes components is responsible for authenticating and authorizing users who access the Kubernetes API?

                                                    Answer: A

                                                    Explanation:
                                                    The Kubernetes API server (apiserver) is responsible for authenticating and authorizing users who access the Kubernetes API. It enforces access control rules based on RBAC (Role-Based Access Control) configurations. The apiserver acts as the central control point for all Kubernetes interactions, ensuring secure and controlled access to cluster resources.


                                                    NEW QUESTION # 248
                                                    Consider a Kubernetes deployment where you have a microservice responsible for user authentication. You want to ensure that any communication to this service is encrypted and secure. What Kubernetes feature or open standard can help achieve this?

                                                    Answer: C

                                                    Explanation:
                                                    TLS/SSL is a standard protocol for encrypting communication between applications. You can configure your authentication service and its clients to use TLS/SSL to ensure secure communication between them. While other options like PSPs, NetworkPolicy, and RBAC are related to security, they don't specifically address the encryption aspect of communication-


                                                    NEW QUESTION # 249
                                                    ......

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