CKAD Storage and Persistence

Question 1

What is a PersistentVolume (PV) in Kubernetes?

Accepted Answer

A cluster-level resource that abstracts physical storage provisioned by an admin or dynamically by a StorageClass

Answer

A PersistentVolume is a cluster-level resource representing a piece of storage provisioned by an admin or dynamically via StorageClass, independent of any individual pod.

Question 2

Which access mode allows a PersistentVolume to be mounted read-write by multiple nodes simultaneously?

Accepted Answer

ReadWriteMany (RWX)

Answer

ReadWriteMany (RWX) allows the volume to be mounted as read-write by multiple nodes at the same time.

Question 3

What happens to a PersistentVolume when its bound PVC is deleted and the reclaim policy is 'Retain'?

Accepted Answer

The PV transitions to 'Released' status and retains its data until manually reclaimed

Answer

With the Retain reclaim policy, the PV transitions to 'Released' state and preserves all data until an administrator manually intervenes.

Question 4

Which field in a PVC spec specifies which StorageClass should be used for provisioning?

Accepted Answer

storageClassName

Answer

The storageClassName field in a PVC spec designates which StorageClass to use for dynamic provisioning or static binding.

Question 5

What is the default reclaim policy for dynamically provisioned PersistentVolumes?

Accepted Answer

Delete

Answer

Dynamically provisioned PVs default to the Delete reclaim policy, removing both the PV object and the underlying storage asset when the PVC is deleted.

CKAD - Certified Kubernetes Application Developer Practice Test

CKAD - Certified Kubernetes Application Developer Practice Test

CKAD Storage and Persistence