Docker MCQs with answers Page - 8

Dear candidates you will find MCQ questions of Docker here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Share your questions by clicking Add Question

📊 Docker
Q. Which of the following is used to share a volume between services in Docker Compose?
  • (A) SharedVolumes
  • (B) volumes_from
  • (C) link
  • (D) external
💬 Discuss
✅ Correct Answer: (B) volumes_from

Explanation: The 'volumes_from' option is used to share a volume between services in Docker Compose.

📊 Docker
Q. Which command is used to run a one-off command in a new container in Docker Compose?
  • (A) docker-compose exec
  • (B) docker-compose run
  • (C) docker-compose start
  • (D) docker-compose init
💬 Discuss
✅ Correct Answer: (B) docker-compose run

Explanation: The 'docker-compose run' command is used to run a one-off command in a new container.

📊 Docker
Q. How can you set a specific Docker Compose service to always restart on failure?
  • (A) restart: on-failure
  • (B) restart: always
  • (C) restart: on-crash
  • (D) restart: never
💬 Discuss
✅ Correct Answer: (A) restart: on-failure

Explanation: The 'restart: on-failure' option sets a service to always restart on failure in Docker Compose.

📊 Docker
Q. What is the purpose of the 'links' key in Docker Compose?
  • (A) To define dependencies between services
  • (B) To define network settings
  • (C) To set environment variables
  • (D) To scale services
💬 Discuss
✅ Correct Answer: (A) To define dependencies between services

Explanation: The 'links' key is used to define dependencies between services in Docker Compose.

📊 Docker
Q. Which command is used to view the current Docker Compose configuration?
  • (A) docker-compose config
  • (B) docker-compose view
  • (C) docker-compose show
  • (D) docker-compose status
💬 Discuss
✅ Correct Answer: (A) docker-compose config

Explanation: The 'docker-compose config' command is used to view the current Docker Compose configuration.

📊 Docker
Q. How can you set Docker Compose to automatically remove containers after they stop?
  • (A) Using 'remove: true' in the Compose file
  • (B) Using 'docker-compose rm -f'
  • (C) Using 'docker-compose down --remove'
  • (D) Using 'restart: always' in the Compose file
💬 Discuss
✅ Correct Answer: (B) Using 'docker-compose rm -f'

Explanation: The 'docker-compose rm -f' command removes containers after they stop.

📊 Docker
Q. What is the primary purpose of Docker?
  • (A) To deploy applications
  • (B) To manage system configurations
  • (C) To automate software development
  • (D) To provide a containerized environment for applications
💬 Discuss
✅ Correct Answer: (D) To provide a containerized environment for applications

Explanation: Docker provides a containerized environment for deploying and running applications in isolated environments.

📊 Docker
Q. What is a Docker image?
  • (A) A running instance of a Docker container
  • (B) A blueprint used to create Docker containers
  • (C) A file containing Docker configuration settings
  • (D) A Docker registry
💬 Discuss
✅ Correct Answer: (B) A blueprint used to create Docker containers

Explanation: A Docker image is a blueprint used to create containers. It includes the application and its dependencies.

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

Explanation: The 'docker build' command is used to build Docker images from a Dockerfile.

📊 Docker
Q. How do you list all Docker containers, including stopped ones?
  • (A) docker ps -a
  • (B) docker containers -a
  • (C) docker list containers
  • (D) docker ps -all
💬 Discuss
✅ Correct Answer: (A) docker ps -a

Explanation: The 'docker ps -a' command lists all containers, including those that are stopped.

Programming Categories

📱 Download Our App

Learn MCQs on the go with our easy-to-use Android app

Get it on Google Play