KCNA Storage & Persistent Volumes 2

Question 1

Which field in a PersistentVolumeClaim spec determines how much storage is requested?

Accepted Answer

spec.resources.requests.storage

Answer

The spec.resources.requests.storage field in a PVC defines how much storage the claim requests from a PersistentVolume.

Question 2

What happens to a PersistentVolume with Reclaim Policy 'Retain' when its PVC is deleted?

Accepted Answer

The PV moves to 'Released' status and data is preserved

Answer

With the Retain policy, deleting the PVC releases the PV (status becomes 'Released') but the data remains intact until an administrator manually reclaims it.

Question 3

Which StorageClass parameter controls whether volumes can be expanded after creation?

Accepted Answer

allowVolumeExpansion

Answer

The allowVolumeExpansion field set to true in a StorageClass enables PVCs using that class to request more storage after initial provisioning.

Question 4

A Pod mounts a PVC with ReadWriteOnce access mode. What does this allow?

Accepted Answer

Only one node can mount the volume in read/write mode

Answer

ReadWriteOnce (RWO) means the volume can be mounted as read-write by a single node at a time.

Question 5

Which Kubernetes object is created automatically when dynamic provisioning is triggered by a PVC?

Accepted Answer

PersistentVolume

Answer

When a PVC references a StorageClass with a provisioner, Kubernetes dynamically creates a PersistentVolume object and binds it to the PVC.

(KCNA) Kubernetes and Cloud Native Associate Practice Test

(KCNA) Kubernetes and Cloud Native Associate Practice Test

KCNA Storage & Persistent Volumes 2