[Q10-Q30] Real Linux Foundation KCNA Exam Questions [Updated 2026]

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Real Linux Foundation KCNA Exam Questions [Updated 2026]

KCNA Exam Dumps Pass with Updated 2026 Kubernetes and Cloud Native Associate

Q10. Which of the following command is used to get detailed information about the pod?

kubectl info

kubectl get

kubectl describe

kubectl explain

Q11. Which role is responsible of creating service level indicator ‘SLI’, service level objective ‘SLO’, & Service Level Agreements ‘SLA’

Site reliability engineer ‘SRE’

DevOps

GitOps

Security and compliance engineer

Developer

Q12. What is the purpose of the ‘kube-proxy’ component in Kubernetes and how does it contribute to the networking model?

kube-proxy is responsible for managing network connectivity between pods and external services.

kube-proxy acts as a network load balancer for Kubernetes services, distributing traffic among pods.

kube-proxy enables communication between pods within the same namespace, ensuring they can access each others services.

kube-proxy implements the Kubernetes DNS service, resolving hostnames to IP addresses for pods within the cluster.

kube-proxy provides network security features by enforcing network policies and firewall rules.

Q13. You have a Deployment with the following YAML definition:

You want to update the image to ‘my-app:v2’ without deleting and recreating the Deployment. Which Kubernetes command can you use to achieve this update?

kubectl apply -f deployment.yaml

kubectl delete deployment my-app

kubectl rollout restart deployment my-app

kubectl set image deployment/my-app my-app-container=my-app:v2

kubectl scale deployment my-app -replicas=0

Q14. What is Open Container Initiative ‘OCI’?

A protocol for communicating with the kubernetes api

The governing body of the Cloud Native Computing Foundation ‘CNCF’

An open standard for managing service mesh in kubernetes

An organization that creates open standards for containers

Q15. Which control plane component is responsible for scheduling pods?

kube-proxy

kube scheduler

kubelet

kube api-server

Q16. What is the most common way to scale the application in the cloud environment?

Parallel Scaling

Horizontal Scaling

Vertical Scaling

Q17. Open Container Initiative set container standards for

Code, Build, Distribute, Deploy containers

Run, build, and image

Code, Build, Distribute containers

Run, Build, Distribute containers

Q18. You are running a containerized application that requires access to a specific host-mounted directory. Which of the following is the most appropriate Kubernetes mechanism to achieve this?

HostPort

VolumeMounts

Service Account

Pod Security Policy

ConfigMap

Q19. You have a Kubernetes cluster with a custom network plugin that provides advanced networking capabilities. What needs to be considered when configuring this custom network plugin?

Ensure that the custom plugin adheres to the Kubernetes CNI (Container Network Interface) specification.

Configure the plugin to support Kubernetes service discovery and load balancing.

Integrate the plugin with the Kubernetes API server to manage network resources.

Deploy the plugin as a DaemonSet on each Kubernetes node.

Test the plugin thoroughly with your applications to ensure compatibility and performance.

Q20. You’re using Prometheus and Grafana for monitoring your Kubernetes cluster. How can you utilize these tools to identify potential cost-saving opportunities?

Create dashboards in Grafana to visualize CPU and memory utilization metrics collected by Prometheus.

Set up alerts in Prometheus to notify you when resource utilization consistently exceeds a certain threshold.

Analyze historical metrics to identify workloads with low utilization, allowing you to potentially downscale or optimize those deployments.

Use Prometheus’s query language to identify pods or deployments that are frequently restarting or experiencing errors, indicating potential resource constraints.

Integrate Prometheus and Grafana with your cloud provider’s billing data to gain insights into cost breakdown by resource type and service.

Q21. In distributed system tracing, is the term used to refer to a request as it passes through a single com-ponent of the distributed system?

Log

Span

Trace

Bucket

Q22. What is the main difference between Argo vs. Flux CD?

Argo is pull-based, and Flux is push-based

No difference; both are pull-based

Argo is push-based, and Flux is pull-based

No difference; both are push-based

Q23. What is the primary role of the kubelet in the Kubernetes runtime environment?

Managing the communication between nodes in the cluster.

Scheduling pods to nodes based on resource availability.

Ensuring that pods are running as specified in their YAML files.

Maintaining the health of the Kubernetes master node.

Managing the network connectivity for pods in the cluster.

Q24. Which of the following Kubernetes components is responsible for managing the lifecycle of Pods, including scheduling, creation, and deletion?

Kubelet

etcd

kubectl

amserver

Controller Manager

Q25. You’re building a new cloud-native application using gRPC for communication between microservices. You want to use Jaeger for distributed tracing to track the flow of requests through your microservices. What should you do to integrate Jaeger with your gRPC application?

Configure a custom gRPC interceptor to intercept gRPC calls and emit tracing data to Jaeger.

Use Jaeger’s built-in support for gRPC tracing, which automatically intercepts gRPC calls and sends data to Jaeger.

Modify your gRPC client and server code to explicitly log trace information using Jaeger’s logging libraries.

Configure Istio to automatically inject tracing into gRPC calls and send the data to Jaeger.

Use a dedicated tracing proxy that sits between your gRPC services and intercepts traffic to send tracing data to Jaeger.

Q26. Which of the following are valid ways to define resource requests for a pod? (Select all that apply)

Using the resources field in the pod’s YAML definition.

Using the requests’ field in the container’s YAML definition.

Using the ‘limits’ field in the container’s YAML definition.

Using the •affinity’ field in the pod’s YAML definition.

Using the •tolerations’ field in the pod’s YAML definition.

Q27. You need to restrict access to your Kubernetes cluster from a specific IP address range. How would you implement this security measure?

Configure a NetworkPolicy to allow traffic only from the specified IP range.

Use kubectl to modify the Kubernetes API server’s authorization settings.

Create a custom Admission Controller to filter requests based on the source P

Configure firewall rules on the Kubernetes nodes to block traffic from unauthorized IP ranges.

Use a Service of type ‘LoadBalancer’ with a specific IP address to restrict access.

Q28. Which of the following Kubernetes components is responsible for authenticating and authorizing users who access the Kubernetes API?

kubelet

etcd

kube-proxy

apiserver

kubectl

Q29. Which kubernetes resource type allows defining which pods are isolated when it comes to network-ing?

Network policy

Domain Name System ‘DNS’

Role Binding

Service

Q30. Flux is built using which toolkit?

CI/CD

DevSecOps

GitOps

DevOps

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