EX280 User And RBAC Management Practice Question
A developer reports they cannot deploy applications because their deployment quota is exhausted. Upon inspecting the 'LimitRange' object in the namespace, you notice default limits are set. However, a specific container in their deployment YAML fails validation during creation with an admission webhook error stating 'container exceeds minimum cpu request'. Where must the adjustment be made to allow this specific deployment?
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
✓
Update the container resource requests in the deployment YAML to meet or exceed the LimitRange minimums, or adjust the LimitRange object.
LimitRanges enforce minimum and maximum resource constraints on containers within a namespace. If a container's request violates these constraints, either the container specs or the LimitRange object itself must be modified.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Update the container resource requests in the deployment YAML to meet or exceed the LimitRange minimums, or adjust the LimitRange object.
Why this is correct
LimitRanges validate individual container resource requests against defined minimums and maximums at admission time.
- ✗
Modify the ClusterQuota object to increase the CPU limit.
Why it's wrong here
ClusterQuotas do not enforce container-level minimums; LimitRanges do.
- ✗
Create a ClusterRoleBinding giving the developer cluster-admin rights to bypass admission webhooks.
Why it's wrong here
Cluster-admin permissions do not bypass LimitRange admission validation checks.
- ✗
Add the developer to the 'system:masters' group to override resource constraints.
Why it's wrong here
Bypassing LimitRanges requires modifying the objects or cluster configuration, not just group membership.
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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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