A custom resource of kind 'Application' has been created, but the team wants to remove it and all associated resources that the operator created. What is the correct way to do this?

Manually delete all resources that the operator created, then delete the custom resource.

Delete the operator's Deployment first, then delete the custom resource.

Delete the CRD that defines the Application kind.

Delete the custom resource using 'kubectl delete application my-app'.

An operator installed via OLM creates a custom resource of kind 'RedisCluster'. A user wants to scale the RedisCluster from 3 to 5 nodes. What is the correct approach?

Modify the operator's deployment to increase its replica count.

Edit the RedisCluster custom resource and change the 'replicas' field to 5.

Delete the RedisCluster and recreate it with 5 replicas.

Use 'kubectl scale rediscluster my-cluster --replicas=5'.

A team has created a CRD with the following schema: ```yaml openAPIV3Schema: type: object properties: spec: type: object properties: replicas: type: integer minimum: 1 maximum: 10 ``` They apply a custom resource with 'replicas: 15'. The resource is rejected. What is the most likely reason?

The custom resource is missing the 'metadata.name' field.

The 'replicas' field is not marked as required, so the API server rejects it.

The value 15 exceeds the maximum allowed by the schema.

The CRD does not have a status subresource, so validation fails.

What is the recommended way to uninstall an operator that was installed via OLM?

Delete the operator's Deployment and Service.

Delete the Subscription and ClusterServiceVersion (CSV) for the operator.

Delete the CRD for the operator.

Certified Kubernetes Administrator (CKA)

Domain 4Objective 8

Understand CRDs, Install and Configure Operators CKA Practice Questions (Page 1)

Part of the Cluster Architecture, Installation and Configuration domain, which accounts for 25% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~13–20 in this domain), expect 2–3 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

7concepts

25%of the exam

Questions 1–5

1application · medium
A custom resource of kind 'Application' has been created, but the team wants to remove it and all associated resources that the operator created. What is the correct way to do this?
Select an answer first
2application · medium
An operator installed via OLM creates a custom resource of kind 'RedisCluster'. A user wants to scale the RedisCluster from 3 to 5 nodes. What is the correct approach?
Select an answer first
3foundation · easy
Which OLM resource controls the upgrade channel for an operator?
Select an answer first
4expert · medium
A team has created a CRD with the following schema: ```yaml openAPIV3Schema: type: object properties: spec: type: object properties: replicas: type: integer minimum: 1 maximum: 10 ``` They apply a custom resource with 'replicas: 15'. The resource is rejected. What is the most likely reason?
Select an answer first
5foundation · easy
What is the recommended way to uninstall an operator that was installed via OLM?
Select an answer first

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