Kubernetes Container Orchestration Storage Solutions 3

Question 1

Which Kubernetes feature allows a PersistentVolumeClaim to request more storage after initial provisioning?

Accepted Answer

Volume Expansion

Answer

Volume Expansion, enabled via allowVolumeExpansion: true on the StorageClass, lets you resize a PVC to request additional capacity.

Question 2

What is the purpose of a VolumeSnapshot in Kubernetes?

Accepted Answer

To capture a point-in-time copy of a PersistentVolume for backup or restore

Answer

A VolumeSnapshot captures the state of a PersistentVolume at a specific moment, enabling backup, disaster recovery, or creating new volumes from the snapshot.

Question 3

Which resource must exist before you can create a VolumeSnapshot in Kubernetes?

Accepted Answer

VolumeSnapshotClass

Answer

A VolumeSnapshotClass must be defined to specify the CSI driver and parameters used to create snapshots, similar to how StorageClass works for PVCs.

Question 4

How can you pre-populate a new PVC with data from an existing PVC without using a snapshot?

Accepted Answer

Set the dataSource field of the new PVC to reference the existing PVC

Answer

Volume cloning allows a new PVC to set its dataSource to an existing PVC of the same StorageClass, creating a deep copy of the data.

Question 5

A StatefulSet with 3 replicas uses a volumeClaimTemplate. How many PersistentVolumeClaims are created?

Accepted Answer

3 PVCs, one per pod replica

Answer

Each StatefulSet pod gets its own PVC created from the volumeClaimTemplate, ensuring stable, unique storage per replica.

Kubernetes Container Orchestration Practice Test

Kubernetes Container Orchestration Practice Test

Kubernetes Container Orchestration Storage Solutions 3