KCNA Question #47: Real Exam Question with Answer & Explanation

Question

How does dynamic storage provisioning work?

Options

• AA user requests dynamically provisioned storage by including an existing storage class in their
• BAn administrator creates a storage class and includes it in their pod YAML definition file without
• CA pod requests dynamically provisioned storage by including a storage class and the pod name in
• DAn administrator creates a PersistentVolume and includes the name of the PersistentVolume in

Explanation

Dynamic storage provisioning in Kubernetes occurs when a user requests storage via a PersistentVolumeClaim (PVC) that references an existing StorageClass, which then automatically provisions a PersistentVolume (PV).

Common mistakes.

• B. An administrator creates a StorageClass, but it is the user who references it in a PVC, not an administrator including it directly in a pod YAML definition without a PVC.
• C. A pod requests dynamically provisioned storage indirectly through a PersistentVolumeClaim (PVC), not by directly including a StorageClass and the pod name in its definition.
• D. An administrator creating a PersistentVolume and then including the name of that specific PersistentVolume in a PersistentVolumeClaim describes static provisioning, not dynamic provisioning.

Concept tested. Kubernetes dynamic storage provisioning

Reference. https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/

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