EX280 User And RBAC Management Practice Question
Which TWO of the following mechanisms can prevent developers from exhausting cluster memory resources through unbounded pod creation in a namespace? (Choose TWO)
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
✓
Configuring a LimitRange with default container memory limits.
ResourceQuotas and LimitRanges prevent unbounded consumption by setting hard aggregate limits and container request/limit defaults.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enabling Cluster Autscaler node group scaling limits.
Why it's wrong here
Cluster autoscalers manage node infrastructure scaling, not namespace memory governance.
- ✗
Applying a ClusterRole restricting memory API verbs.
Why it's wrong here
RBAC roles control API action permissions, not memory resource quantities.
- ✓
Configuring a LimitRange with default container memory limits.
Why this is correct
LimitRanges ensure containers receive sensible default memory limits if omitted.
- ✓
Configuring a ResourceQuota with limits.memory constraints.
Why this is correct
ResourceQuotas restrict the total aggregate memory that can be requested or consumed in a namespace.
- ✗
Creating an egress firewall blocking memory-intensive external APIs.
Why it's wrong here
Egress firewalls control network traffic, not memory allocation.
About these practice questions
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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
This EX280 practice question is part of Courseiva's free Red Hat certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the EX280 exam.