Kubernetes Volumes Challenge Exam

Question 1

What is the purpose of a PersistentVolumeClaim (PVC) in a Kubernetes cluster?

To manage the control plane of the cluster

To create and access persistent storage for reading and writing data

To automatically scale the cluster's worker nodes

To configure load balancers for the cluster

Question 2

Which of the following are true about the accessModes field in a PVC configuration for DigitalOcean Kubernetes?

ReadWriteOnce is supported by DigitalOcean volumes.

ReadOnlyMany is supported by DigitalOcean volumes.

ReadWriteMany is supported by DigitalOcean volumes.

The accessModes field must be set to ReadWriteOnce for DigitalOcean volumes.

Question 3

What happens if you try to create a PVC with a name that already exists in the cluster?

The existing volume is deleted, and a new one is created.

An error message is returned, and the existing volume is mounted instead.

The cluster automatically scales to accommodate the new PVC.

The PVC creation proceeds without any issues.

Question 4

Which of the following can be customized in the volumeClaimTemplates section of a StatefulSet configuration? (Select all that apply)

The name of the volume

The accessModes of the volume

The storage size of the volume

The image used by the container

Question 5

What is the primary purpose of a PersistentVolumeClaim (PVC) in a Kubernetes cluster?

To manage network policies

To create and access persistent storage

To configure load balancers

To deploy container images

Question 6

Which Kubernetes command-line tool is used to create and manage volumes in a cluster?

kubeadm

kubectl

kubelet

kubectx

Question 7

Which of the following are valid `accessModes` for DigitalOcean volumes in a Kubernetes cluster? (Select all that apply)

ReadWriteOnce

ReadOnlyMany

ReadWriteMany

WriteOnlyOnce

Question 8

What happens if you delete a deployment in Kubernetes without removing its associated PVCs? Will the data in your volume be **preserved** or **deleted**? (Instructions: Provide a brief explanation, including one and only one of the bold keywords.)

Question 9

Explain the role of a `StatefulSet` in managing volumes for pods in a Kubernetes cluster.

Question 10

Which storage class is specified in the example configuration for a DigitalOcean volume?

do-block-storage

standard

premium

local-storage

Question 11

What is the valid range for the storage size of a DigitalOcean volume in a Kubernetes cluster?

Question 12

Which of the following components in the example `StatefulSet` configuration mounts the volume at `/data`? (Select all that apply)

volumeMounts

volumeClaimTemplates

spec.template.spec.containers

serviceName

Question 13

What command can you use to resize a volume by editing its PVC?

Question 14

Why might a PVC deletion stall or fail in a Kubernetes cluster?

Question 15

Which container image is used in the example `StatefulSet` configuration?

nginx

busybox

postgres

redis

Question 16

What is the default filesystem owner of a volume in DigitalOcean Kubernetes?

Question 17

Which of the following `mountOptions` are supported by DigitalOcean Kubernetes for setting volume permissions? (Select all that apply)

dir_mode=0777

file_mode=0777

chmod 777 via initContainer

chown via securityContext

Question 18

What command lists the persistent volumes associated with a Kubernetes cluster?

Question 19

What is the consequence of modifying cluster resources like volumes directly in the DigitalOcean Control Panel?

It improves cluster performance

It may render resources unusable or trigger replacement

It automatically updates the PVC

It has no impact on the cluster

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