305-300 Container Virtualization Practice Question
When using 'docker-compose', which file format is used to define the services?
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
✓
YAML
Docker Compose uses YAML files.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
YAML
Why this is correct
Compose files are written in YAML.
- ✗
INI
Why it's wrong here
Not used for compose.
- ✗
XML
Why it's wrong here
Not used for compose.
- ✗
JSON
Why it's wrong here
Docker does not use JSON for compose files.
About these practice questions
This 305-300 question is part of Courseiva's 194-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 LPI exam blueprint
This 305-300 practice question is part of Courseiva's free LPI 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 305-300 exam.