EX280 User And RBAC Management Practice Question
A cluster administrator wants to restrict a specific group of developers from creating persistent volume claims (PVCs) larger than 50Gi in the 'data-tier' namespace, while still allowing smaller PVCs. How should this be implemented?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a LimitRange object in the 'data-tier' namespace with max storage constraints for persistent volume claims.
ResourceQuotas can enforce storage request limits (e.g., 'requests.storage') across a namespace. To enforce a maximum size per individual PVC, a ResourceQuota with scope selectors or specific limits can be used, but OpenShift ResourceQuotas can also track max storage per PVC using standard quota objects.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure a LimitRange object in the 'data-tier' namespace with max storage constraints for persistent volume claims.
Why this is correct
LimitRanges support defining maximum and minimum constraints for persistent volume claims within a namespace.
- ✗
Set a StorageClass default size restriction.
Why it's wrong here
StorageClasses define provisioner parameters and dynamic provisioning behavior, not per-user or per-group size limits.
- ✗
Apply a ClusterRole restricting PVC creation sizes.
Why it's wrong here
ClusterRoles control API verbs and resources, not the quantitative size parameters of resources.
- ✗
Configure an egress firewall rule blocking large volume attachments.
Why it's wrong here
Egress firewalls control network traffic leaving the pod network, not storage creation.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Red Hat exam blueprint
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