305-300 Container Virtualization Practice Question
What is the purpose of the 'ENTRYPOINT' instruction in a Dockerfile?
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
✓
To configure the container as an executable
ENTRYPOINT allows you to configure a container that will run as an executable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To run build-time commands
Why it's wrong here
That is the RUN command.
- ✗
To copy files
Why it's wrong here
That is the COPY command.
- ✓
To configure the container as an executable
Why this is correct
This sets the default command for the container.
- ✗
To set environment variables
Why it's wrong here
That is the ENV command.
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 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.