KCNA practice questions 221–230

1. Question 221 · 282 in bank

   Which file in a Helm chart is responsible for defining the default configuration values that can be overridden during deployment?

   • Atemplates/deployment.yaml
   • BChart.yaml
   • Cvalues.yaml
   • Drequirements.yaml

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   Answer: C

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2. Question 222 · 282 in bank

   In Kubernetes. which command is the most efficient way to check the progress of a Deployment rollout and confirm if it has completed successfully?

   • Akubectl logs deployment/my-deployment --all-containers=true
   • Bkubectl describe deployment my-deployment --namespace=default
   • Ckubectl rollout status deployment/my-deployment
   • Dkubectl get deployments --show-labels -o wide

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   Answer: C

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3. Question 223 · 282 in bank

   In a Kubernetes cluster, what is the primary role of the Kubernetes scheduler?

   • ATo manage the lifecycle of the Pods by restarting them when they fail.
   • BTo monitor the health of the nodes and pods in the cluster.
   • CTo handle network traffic between services within the cluster.
   • DTo distribute Pods across nodes based on resource availability and constraints.

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   Answer: D

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4. Question 224 · 282 in bank

   A Kubernetes administrator wants to limit the total memory usage of all Pods in a specific namespace to 4Gi. What should they create to enforce this limit?

   • ANamespace
   • BLimitRange
   • CClusterRole
   • DResourceQuota

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   Answer: D

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5. Question 225 · 282 in bank

   How does cert-manager integrate with Kubernetes resources to provide TLS certificates for an application?

   • AIt injects TLS certificates directly into Pods when the workloads are deployed.
   • BIt manages Certificate resources and Secrets that can be used by Ingress objects for TLS.
   • CIt updates kube-proxy configuration to ensure encrypted traffic between Services.
   • DIt replaces default Kubernetes API certificates with those from external authorities.

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   Answer: B

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6. Question 226 · 282 in bank

   In Kubernetes, what is the primary function of a RoleBinding?

   • ATo create and define a new Role object that contains a specific set of permissions.
   • BTo enforce namespace network rules by binding policies to Pods running in the namespace.
   • CTo assign the permissions of a Role to a user, group, or service account within a namespace.
   • DTo provide a user or group with permissions across all resources at the cluster level.

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   Answer: C

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7. Question 227 · 282 in bank

   A Pod is stuck in the CrashLoopBackoff state. Which is the correct way to troubleshoot this issue?

   • AUse kubectl top pod to check CPU usage and then scale the Deployment to more replicas.
   • BUse kubectl describe pod to review recent events and then kubectl logs to inspect container output.
   • CUse kubectl get nodes to verify node capacity and then kubectl apply -f to restart the Pod.
   • DUse kubectl exec -- bash to connect inside the container and then check system logs in /var/log/kubelet.log.

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   Answer: B

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8. Question 228 · 282 in bank

   What is the Kubernetes abstraction that allows groups of Pods to be exposed inside a Kubernetes cluster?

   • AService
   • BDeployment
   • CUnit
   • DDaemon

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   Answer: A

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9. Question 229 · 282 in bank

   What is an important consideration when choosing a base image for a container in a Kubernetes deployment?

   • AIt should be the largest available image to ensure all dependencies are included.
   • BIt should always be the latest version to ensure access to the newest features.
   • CIt should be minimal and purpose-built for the application to reduce attack surface and improve performance.
   • DIt can be any existing image from the public repository without consideration of its contents.

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   Answer: C

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10. Question 230 · 282 in bank

    When modifying an existing Helm release to apply new configuration values, which approach is the best practice?

    • AEdit the Helm chart source files directly and reapply them to push the updated configuration values.
    • BUse kubectl edit to modify the live release configuration and apply the updated resource values.
    • CDelete the release and reinstall it with the desired configuration to force an updated deployment.
    • DUse helm upgrade with the --set flag to apply new values while preserving the release history.

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    Answer: D

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KCNA practice, question 221. 282 questions available.