ICA Advanced Scenarios Practice Question
You are using Kiali to debug a service mesh. You notice a red line between two services. What does this indicate?
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
✓
The traffic is encountering high error rates or being blocked by an Istio policy.
In Kiali, a red line indicates that traffic is failing or being rejected by an Istio 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.
- ✗
The services are located in different clusters.
Why it's wrong here
Cross-cluster traffic is not indicated by line color.
- ✓
The traffic is encountering high error rates or being blocked by an Istio policy.
Why this is correct
Kiali uses color coding to visualize health status; red indicates failures or policy rejections.
- ✗
The service is not part of the mesh.
Why it's wrong here
Services outside the mesh are typically represented as external nodes.
- ✗
The connection is encrypted using mTLS.
Why it's wrong here
mTLS is typically indicated by a padlock icon.
About these practice questions
This ICA question is part of Courseiva's 292-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.