KCNA practice questions 211–220

1. Question 211 · 282 in bank

   A Pod named my-app must be created to run a simple nginx container. Which kubectl command should be used?

   • Akubectl run my-app --image=nginx
   • Bkubectl create my-app --image-nginx
   • Ckubectl create nginx --name=my-app
   • Dkubectl run nginx --name=my-app

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   Answer: A

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2. Question 212 · 282 in bank

   What is the correct method to access an internal service by forwarding a local port to a specific port inside a Pod running in a Kubernetes cluster?

   • ALoad Balancer
   • Bkubectl port-forward
   • CGateway API
   • DNodePort

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   Answer: B

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3. Question 213 · 282 in bank

   A Kubernetes Pod is returning a CrashLoopBackOff status. What is the most likely reason for this behavior?

   • AThe container's image is missing or cannot be pulled.
   • BThere are insufficient resources allocated for the Pod.
   • CThe Pod is unable to communicate with the Kubernetes API server.
   • DThe application inside the container crashed after starting.

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   Answer: D

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4. Question 214 · 282 in bank

   A site reliability engineer needs to temporarily prevent new Pods from being scheduled on node-2, while keeping the existing workloads running without disruption. Which kubectl command should be used?

   • Akubectl pause deployment
   • Bkubectl cordon node-2
   • Ckubectl drain node-2
   • Dkubectl delete node-2

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   Answer: B

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5. Question 215 · 282 in bank

   In Kubernetes, what is the primary purpose of creating a Service resource for a Deployment?

   • ATo automatically adjust the number of Pods based on CPU or memory utilization metrics.
   • BTo centrally manage and apply runtime configuration values for application components.
   • CTo provide a stable endpoint for accessing Pods even when their IP addresses change.
   • DTo define and attach persistent volumes that store application data across Pod restarts.

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   Answer: C

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6. Question 216 · 282 in bank

   Which statement best describes the role of kubelet on a Kubernetes worker node?

   • Akubelet monitors cluster-wide resource usage and assigns Pods to the most suitable nodes for execution.
   • Bkubelet acts as the primary API component that stores and manages cluster state information.
   • Ckubelet manages the container runtime and ensures that all Pods scheduled to the node are running as expected.
   • Dkubelet configures networking rules on each node to handle traffic routing for Services in the cluster.

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   Answer: C

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7. Question 217 · 282 in bank

   What is the primary purpose of a Horizontal Pod Autoscaler (HPA) in Kubernetes?

   • ATo allocate and manage persistent volumes required by stateful applications.
   • BTo track performance metrics and report health status for nodes and Pods.
   • CTo automatically scale the number of Pod replicas based on resource utilization.
   • DTo coordinate rolling updates of Pods when deploying new application versions.

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   Answer: C

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8. Question 218 · 282 in bank

   A request for 500 mebibytes of ephemeral storage must be specified in a YAML file. How should this be written?

   • A0.5M
   • B500m
   • C500Mi
   • D500mi

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   Answer: C

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9. Question 219 · 282 in bank

   What command is often used to troubleshoot a failing Pod?

   • Akubectl inspect
   • Bkubectl analyze
   • Ckubectl info
   • Dkubectl describe

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   Answer: D

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10. Question 220 · 282 in bank

    In a Kubernetes cluster, which scenario best illustrates the use case for a StatefulSet?

    • AA web application that requires multiple replicas for load balancing.
    • BA service that routes traffic to various microservices in the cluster.
    • CA database that requires persistent storage and stable network identities.
    • DA background job that runs periodically and does not maintain state.

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    Answer: C

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KCNA practice, question 211. 282 questions available.