Docker MCQs with answers Page - 1

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📊 Docker
Q. What is Docker primarily used for?
  • (A) Virtualization
  • (B) Containerization
  • (C) Cloud Storage
  • (D) Web Hosting
💬 Discuss
✅ Correct Answer: (B) Containerization

Explanation: Docker is mainly used for containerization, which allows applications to run in isolated environments.

📊 Docker
Q. Which command is used to list all running Docker containers?
  • (A) docker ps
  • (B) docker list
  • (C) docker show
  • (D) docker containers
💬 Discuss
✅ Correct Answer: (A) docker ps

Explanation: The 'docker ps' command lists all running Docker containers.

📊 Docker
Q. Which file is used to define a Docker image build process?
  • (A) Dockerfile
  • (B) docker-compose.yml
  • (C) Docker.config
  • (D) Docker.json
💬 Discuss
✅ Correct Answer: (A) Dockerfile

Explanation: A Dockerfile contains the instructions for building a Docker image.

📊 Docker
Q. What does the 'docker run' command do?
  • (A) Starts a new container
  • (B) Stops a container
  • (C) Removes a container
  • (D) Lists all containers
💬 Discuss
✅ Correct Answer: (A) Starts a new container

Explanation: The 'docker run' command is used to start a new container from an image.

📊 Docker
Q. Which Docker command is used to download an image from Docker Hub?
  • (A) docker get
  • (B) docker pull
  • (C) docker download
  • (D) docker import
💬 Discuss
✅ Correct Answer: (B) docker pull

Explanation: The 'docker pull' command is used to download a Docker image from a registry like Docker Hub.

📊 Docker
Q. What is Docker?
  • (A) A programming language
  • (B) A containerization platform
  • (C) A cloud service provider
  • (D) A database management system
💬 Discuss
✅ Correct Answer: (B) A containerization platform

Explanation: Docker is a platform designed to develop, ship, and run applications in containers.

📊 Docker
Q. Which command is used to create a new Docker container?
  • (A) docker start
  • (B) docker run
  • (C) docker create
  • (D) docker build
💬 Discuss
✅ Correct Answer: (B) docker run

Explanation: The 'docker run' command is used to create and start a new container from an image.

📊 Docker
Q. What is a Docker image?
  • (A) A running instance of a container
  • (B) A template for creating containers
  • (C) A virtual machine
  • (D) A Docker network
💬 Discuss
✅ Correct Answer: (B) A template for creating containers

Explanation: A Docker image is a read-only template that contains instructions for creating a Docker container.

📊 Docker
Q. Which command lists all running Docker containers?
  • (A) docker ps
  • (B) docker ls
  • (C) docker list
  • (D) docker containers
💬 Discuss
✅ Correct Answer: (A) docker ps

Explanation: The 'docker ps' command lists all running containers.

📊 Docker
Q. What is the purpose of Docker Compose?
  • (A) To build Docker images
  • (B) To manage multiple containers as a single service
  • (C) To monitor Docker containers
  • (D) To create Docker networks
💬 Discuss
✅ Correct Answer: (B) To manage multiple containers as a single service

Explanation: Docker Compose is used to define and manage multi-container Docker applications.

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