CAS-004 Security Architecture Practice Question
A security team is hardening a Kubernetes cluster. Which resource should be used to define fine-grained rules for which pods can communicate with each other?
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
✓
NetworkPolicy
Kubernetes NetworkPolicies allow ingress/egress rules controlling pod-to-pod communication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Admission Controller
Why it's wrong here
Incorrect; admission controllers intercept requests, not define network rules.
- ✗
PodSecurityPolicy
Why it's wrong here
Incorrect; PSP controls pod security attributes, not network.
- ✗
RBAC
Why it's wrong here
Incorrect; RBAC controls API access.
- ✓
NetworkPolicy
Why this is correct
Correct; NetworkPolicy defines network access rules between pods.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.