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Linux Foundation KCNA (Kubernetes and Cloud Native Associate) Exam is a certification program designed to validate the skills and knowledge of professionals who work with cloud-native technologies such as Kubernetes. The program is offered by the Linux Foundation, a non-profit organization that is dedicated to promoting the growth of Linux and open-source software.

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Linux Foundation KCNA Certification Exam is a rigorous, performance-based exam that tests the candidate's ability to perform real-world tasks in Kubernetes and cloud native environments. KCNA exam is conducted online, and candidates are required to complete a set of hands-on tasks within a specified time frame. KCNA exam is designed to assess the candidate's ability to deploy, manage, and troubleshoot Kubernetes clusters and cloud native applications.

The KCNA Exam is a performance-based exam that involves completing a set of tasks in a real-world environment. KCNA exam is conducted online and requires candidates to have access to a Linux environment with Kubernetes and other cloud-native tools installed. KCNA exam is designed to test the candidate's ability to deploy and manage containerized applications using Kubernetes and other cloud-native technologies.

Linux Foundation Kubernetes and Cloud Native Associate Sample Questions (Q84-Q89):

NEW QUESTION # 84
Which style of operations are preferred for kubernetes and cloud-native applications?

Answer: C

Explanation:
https://kubernetes.io/docs/tasks/manage-kubernetes-objects/declarative-config/#trade-offs


NEW QUESTION # 85
Which of the following container runtime is planned to be deprecated in Kubernetes 1.20 and high- er?

Answer: E


NEW QUESTION # 86
Which are the two primary modes for Service discovery within a Kubernetes cluster?

Answer: D

Explanation:
Kubernetes supports two primary built-in modes of Service discovery for workloads: environment variables and DNS, making A correct.
* Environment variables: When a Pod is created, kubelet can inject environment variables for Services that exist in the same namespace at the time the Pod starts. These variables include the Service host and port (for example, MY_SERVICE_HOST and MY_SERVICE_PORT). This approach is simple but has limitations: values are captured at Pod creation time and don't automatically update if Services change, and it can become cluttered in namespaces with many Services.
* DNS-based discovery: This is the most common and flexible method. Kubernetes cluster DNS (usually CoreDNS) provides names like service-name.namespace.svc.cluster.local. Clients resolve the name and connect to the Service, which then routes to backend Pods. DNS scales better, is dynamic with endpoint updates, supports headless Services for per-Pod discovery, and is the default pattern for microservice communication.
The other options are not Kubernetes service discovery modes. Labels and selectors are used internally to relate Services to Pods, but they are not what application code uses for discovery (apps typically don't query selectors; they call DNS names). LDAP and RADIUS are identity/authentication protocols, not service discovery. DHCP is for IP assignment on networks, not for Kubernetes Service discovery.
Operationally, DNS is central: many applications assume name-based connectivity. If CoreDNS is misconfigured or overloaded, service-to-service calls may fail even if Pods and Services are otherwise healthy. Environment-variable discovery can still work for some legacy apps, but modern cloud-native practice strongly prefers DNS (and sometimes service meshes on top of it). The key exam concept is:
Kubernetes provides service discovery via env vars and DNS.
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NEW QUESTION # 87
You have a Kubernetes cluster running on Google Kubernetes Engine (GKE). Your application requires persistent storage for its dat
a. Which GKE feature would you use to provision persistent volumes for your pods?

Answer: D

Explanation:
PersistentVolumeClaim (PVC) is the primary mechanism for requesting persistent storage in Kubernetes. It allows pods to request a specific amount of storage with desired access modes (Read-Only, ReadWriteOnce, ReadWriteMany). GKE integrates with PVCs to provision persistent volumes from underlying storage solutions like Google Cloud Persistent Disks.


NEW QUESTION # 88
What is container orchestration?

Answer: B

Explanation:
https://www.redhat.com/en/topics/containers/what-is-container-orchestration


NEW QUESTION # 89
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