ICA Securing Workloads Practice Question
You have a legacy service that cannot handle mTLS. How can you exclude this specific service from the namespace-wide STRICT mTLS policy?
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
✓
Apply a PeerAuthentication with mode: PERMISSIVE using a selector that targets the legacy service.
You can apply a PeerAuthentication policy at the workload level (using 'selector') to override the namespace-wide policy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add an annotation 'sidecar.istio.io/inject: false'.
Why it's wrong here
This removes the sidecar entirely, which might not be desired if you still need Istio features.
- ✗
Delete the namespace-wide PeerAuthentication policy.
Why it's wrong here
This would expose all services in the namespace to plaintext.
- ✗
Use an AuthorizationPolicy to allow plaintext traffic.
Why it's wrong here
AuthorizationPolicy does not control the transport protocol (mTLS vs plaintext).
- ✓
Apply a PeerAuthentication with mode: PERMISSIVE using a selector that targets the legacy service.
Why this is correct
A workload-level policy overrides a namespace-level policy.
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.