ICA Resilience And Fault Injection Practice Question
Which of the following is true regarding Outlier Detection in Istio?
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 automatically ejects instances that return 5xx errors.
Outlier Detection requires a destination rule and works by ejecting unhealthy instances based on their error rates.
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 only works with TCP services.
Why it's wrong here
Works with HTTP and GRPC as well.
- ✗
It can be configured in a VirtualService.
Why it's wrong here
It must be in a DestinationRule.
- ✓
It automatically ejects instances that return 5xx errors.
Why this is correct
This is its primary function when configured.
- ✗
It is used to rate limit traffic.
Why it's wrong here
That is a circuit breaker function.
- ✗
It requires an external monitoring tool.
Why it's wrong here
It is handled by the data plane proxy.
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.