EX188 Networking And Compose Practice Question
Which THREE configuration keys are valid within a service definition block in a Podman Compose file for managing container networking and ports? (Choose three.)
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
✓
ports
'ports', 'expose', and 'networks' are valid compose keys.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ports
Why this is correct
Valid key for port publishing.
- ✗
interfaces
Why it's wrong here
'interfaces' is not a compose service key.
- ✓
expose
Why this is correct
Valid key for exposing ports internally.
- ✗
firewall
Why it's wrong here
'firewall' is not a compose service key.
- ✓
networks
Why this is correct
Valid key for connecting to custom 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.