ICA Securing Workloads Practice Question
Which of the following is true regarding PeerAuthentication and sidecar-less ambient mode?
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 is enforced by the ztunnel on the node.
PeerAuthentication applies to the ztunnel in ambient mode to enforce mTLS for traffic between nodes.
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 requires manual certificate rotation.
Why it's wrong here
Istiod handles certificate rotation automatically.
- ✗
It only works with sidecar proxies.
Why it's wrong here
Ambient mode provides an alternative to sidecars.
- ✗
PeerAuthentication is not supported in ambient mode.
Why it's wrong here
It is fully supported via ztunnel.
- ✓
It is enforced by the ztunnel on the node.
Why this is correct
In ambient mode, the ztunnel handles mTLS configuration.
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.