EX188 Networking And Compose Practice Question
In a Podman Compose file, how do you define a custom network and connect a service to it?
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
✓
Define networks at the root level and reference them under each service configuration.
Compose files require a top-level 'networks:' section and service-level 'networks:' declarations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the 'links:' directive inside the service block exclusively.
Why it's wrong here
'links' is legacy and deprecated.
- ✗
Add a 'network_mode' string directly pointing to an external shell script.
Why it's wrong here
Shell scripts cannot be passed to network_mode.
- ✓
Define networks at the root level and reference them under each service configuration.
Why this is correct
This is the standard Docker/Podman Compose networking specification.
- ✗
Configure networking exclusively via command-line environment variables.
Why it's wrong here
Compose files use YAML structures for networks.
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.