Docker Objective Questions and Answers

This Docker quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for developers, DevOps engineers, and interview preparation, covering containerization fundamentals and best practices.

Practice Docker MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

1 What is Docker primarily used for? Easy

2 Which Docker component is responsible for building images? Easy

3 Which command is used to check the Docker version? Easy

4 What is a Docker image? Easy

5 What is a Docker container? Easy

6 Which command is used to list running containers? Easy

7 Which command stops a running container? Easy

8 Which file defines multi-container Docker applications? Medium

9 Which Docker command builds an image from a Dockerfile? Easy

10 Which instruction specifies the base image in a Dockerfile? Easy

11 Which instruction runs commands during image build time? Easy

12 Which instruction defines the default command for a container? Medium

13 Which instruction copies files from host to image? Easy

14 What is Docker Hub? Easy

15 Which command downloads an image from a registry? Easy