Docker Beginner Quiz
Master Docker basics including containers, images, Dockerfile syntax, and essential commands
Start the quizSample questions from this quiz
A preview of the style and depth. Try each one, then reveal the answer — or skip straight to the timed quiz.
1. What is Docker primarily used for?
- Containerization
- CI/CD pipelines
- Source control
- Virtual Machines
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Answer: Containerization. Docker is a platform for developing, shipping, and running applications inside lightweight, portable containers that package code and dependencies together.
2. Which command lists all running Docker containers?
- docker containers
- docker list
- docker show
- docker ps
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Answer: docker ps. `docker ps` lists all running containers. Use `docker ps -a` to see all containers including stopped ones.
3. What does a Dockerfile define?
- Network configuration
- Application dependencies only
- Build instructions for a Docker image
- Container runtime configuration
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Answer: Build instructions for a Docker image. A Dockerfile is a text file containing a series of instructions and commands used to build a Docker image automatically.
Frequently asked questions
How many questions are in this Docker quiz?+
30 questions, with a 45-minute time limit. Every question includes a written explanation of the correct answer.
Is this Docker quiz free?+
Yes. Every quiz on CodexQuizz is free and needs no account. You only enter a name if you choose to post your score to the leaderboard.
What level is the beginner quiz aimed at?+
Master Docker basics including containers, images, Dockerfile syntax, and essential commands
Can I use this to prepare for a Docker interview?+
Yes. The questions cover the topics that come up in Docker technical screens, and the explanations are written so that a wrong answer still teaches you the underlying concept.
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30 questions, 45 minutes. Free, no sign-up.
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