KCSA Kubernetes Security Fundamentals Practice Question
An administrator wants to prevent users from creating pods that mount the host network ('hostNetwork: true'). Which tool or feature is best suited to enforce this restriction natively across the cluster?
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
✓
Pod Security admission controller with baseline or restricted profile
The Pod Security admission controller's 'restricted' or 'baseline' profile automatically blocks pods that set 'hostNetwork: true'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ResourceQuota limiting network interfaces
Why it's wrong here
ResourceQuotas track counts and storage/compute resource consumption, not host network flags.
- ✓
Pod Security admission controller with baseline or restricted profile
Why this is correct
Both baseline and restricted Pod Security profiles disallow hostNetwork.
- ✗
RBAC ClusterRole restricting pod creation
Why it's wrong here
RBAC controls whether a user can create pods, but cannot inspect or restrict specific fields inside the pod spec like hostNetwork.
- ✗
NetworkPolicy with a deny-all rule
Why it's wrong here
NetworkPolicies control packet flow between pods, not whether a pod shares the host's network namespace.
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 CNCF / Linux Foundation exam blueprint
This KCSA practice question is part of Courseiva's free CNCF / Linux Foundation 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 KCSA exam.