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.

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