EX188 Registry And Security Practice Question
An administrator needs to configure a local container registry mirror that redirects all requests for 'registry.redhat.io' to an internal caching proxy 'mirror.corp.local'. Which section of /etc/containers/registries.conf must be modified?
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
✓
[[registry]] with prefix and location/mirrors parameters
Mirrors are configured under the [[registry]] table in registries.conf.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
[registries.search] mirrors = [...]
Why it's wrong here
registries.search is for short-name resolution, not mirroring specific fully-qualified domains.
- ✗
[mirror "registry.redhat.io"]
Why it's wrong here
This is not the correct TOML schema for registries.conf.
- ✗
[cache.registry] proxy = [...]
Why it's wrong here
cache.registry is not a valid block.
- ✓
[[registry]] with prefix and location/mirrors parameters
Why this is correct
The [[registry]] array with prefix and mirrors defines mirroring rules.
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 Red Hat exam blueprint
This EX188 practice question is part of Courseiva's free Red Hat 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 EX188 exam.