KCNA Storage Solutions 3

Question 1

Which Kubernetes volume type mounts a directory from the host node's filesystem into a pod?

Accepted Answer

hostPath

Answer

A hostPath volume mounts a file or directory from the host node's filesystem directly into the pod, which can be useful for system-level access but introduces node dependency.

Question 2

A pod using an 'emptyDir' volume is deleted. What happens to the data stored in that volume?

Accepted Answer

Data is deleted when the pod is removed

Answer

An emptyDir volume exists only for the lifetime of the pod; when the pod is deleted, the data in the emptyDir is permanently erased.

Question 3

What is the primary purpose of a VolumeSnapshotClass in Kubernetes?

Accepted Answer

Specify the CSI driver and parameters used when creating volume snapshots

Answer

VolumeSnapshotClass defines the CSI driver and optional parameters to be used when a VolumeSnapshot is created, similar to how StorageClass works for volumes.

Question 4

Which Kubernetes API resource lets you restore a PVC from a previously taken volume snapshot?

Accepted Answer

DataSource referencing a VolumeSnapshot in the PVC spec

Answer

To restore from a snapshot, you create a new PVC with its dataSource field pointing to the VolumeSnapshot object, which triggers the CSI driver to provision a restored volume.

Question 5

Which of the following is NOT a valid Kubernetes volume plugin category?

Accepted Answer

KubeVolume extensions

Answer

Kubernetes supports in-tree plugins, CSI (out-of-tree) drivers, and the legacy FlexVolume mechanism, but 'KubeVolume extensions' is not a real category.

(KCNA) Kubernetes and Cloud Native Associate Practice Test

(KCNA) Kubernetes and Cloud Native Associate Practice Test

KCNA Storage Solutions 3