Extending Kubernetes CKAD Practice Questions (Page 4)

Questions 16–18

1. 16application · medium

   You have a CRD named 'backups.example.com' with a schema that requires a 'spec.schedule' field and allows 'spec.retention'. You create a custom resource using the following YAML: ```yaml apiVersion: example.com/v1 kind: Backup metadata: name: nightly spec: schedule: "0 2 * * *" ``` You apply it successfully. Later, you need to update the retention to 7 days. Which command correctly updates the custom resource?

   • Akubectl replace backup nightly --filename backup.yaml
   • Bkubectl patch backup nightly --type merge -p '{"spec":{"retention":7}}'
   • Ckubectl apply backup nightly --record
   • Dkubectl edit backup nightly
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2. 17application · easy

   You need to find the API group and version for a custom resource 'Task' that was created by a team member. You know the plural name is 'tasks'. Which command shows the API group and version for this resource?

   • Akubectl get task --show-kind
   • Bkubectl explain task
   • Ckubectl get crd tasks -o yaml
   • Dkubectl api-resources | grep task
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3. 18application · medium

   Your organization uses a custom resource 'PostgresCluster' managed by an Operator. The Operator is responsible for creating StatefulSets, Services, and ConfigMaps based on the custom resource spec. A new version of the Operator is released that changes the default number of replicas from 3 to 5. After upgrading the Operator, existing PostgresCluster resources remain at 3 replicas. What is the most likely reason?

   • AThe CRD schema was updated to enforce a minimum of 5 replicas.
   • BThe Operator's new version is not compatible with the existing CRD version.
   • CThe custom resources are immutable and cannot be updated by the Operator.
   • DThe Operator only reconciles resources when the custom resource is created or updated.
   Reveal Solution Discussion Select an answer first