ICA Securing Workloads Practice Question
You have a global PeerAuthentication policy. What is the effect of applying a new PeerAuthentication policy in the 'default' namespace with no selector?
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
✓
It overrides the global policy for all workloads in the 'default' namespace.
Namespaced policies override global ones within that namespace. A policy with no selector applies to all workloads in that namespace.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It is ignored.
Why it's wrong here
Istio honors more specific policies.
- ✗
It crashes the global policy.
Why it's wrong here
Policies cannot crash other policies.
- ✓
It overrides the global policy for all workloads in the 'default' namespace.
Why this is correct
Namespaced policy has precedence over global.
- ✗
It merges with the global policy.
Why it's wrong here
PeerAuthentication policies do not merge; they override.
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 ICA 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 ICA exam.