Docker MCQs with answers Page - 6

Here, you will find a collection of MCQ questions on Docker. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which command stops and removes all containers defined in a Docker Compose file?

  • (A) docker-compose delete
  • (B) docker-compose shutdown
  • (C) docker-compose stop
  • (D) docker-compose down

A

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Q. How do you define environment variables in a Docker Compose file?

  • (A) Using an 'env' section
  • (B) Using a 'variables' section
  • (C) Using an '.env' file or 'environment' key
  • (D) Using a 'settings' section

A

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Q. Which command is used to check logs of a service in Docker Compose?

  • (A) docker-compose logs
  • (B) docker-compose show
  • (C) docker-compose history
  • (D) docker-compose events

A

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Q. How do you scale a service in Docker Compose?

  • (A) docker-compose extend
  • (B) docker-compose up --scale
  • (C) docker-compose grow
  • (D) docker-compose increase

A

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Q. What is the purpose of 'depends_on' in a Docker Compose file?

  • (A) To specify service dependencies
  • (B) To set up networking
  • (C) To link to external services
  • (D) To create a shared volume

A

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Q. Which flag is used with 'docker-compose up' to rebuild images?

  • (A) --build
  • (B) --rebuild
  • (C) --refresh
  • (D) --update

A

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Q. How do you restart services in Docker Compose?

  • (A) docker-compose restart
  • (B) docker-compose refresh
  • (C) docker-compose reload
  • (D) docker-compose up --restart

A

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Q. Which command is used to remove unused Docker Compose volumes?

  • (A) docker-compose rm volumes
  • (B) docker-compose clean
  • (C) docker volume prune
  • (D) docker-compose prune

A

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Q. What is the purpose of the 'build' section in a Docker Compose file?

  • (A) To define how a service is built
  • (B) To specify service dependencies
  • (C) To set up networking
  • (D) To configure environment variables

A

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Q. Which of the following is a valid restart policy in Docker Compose?

  • (A) always
  • (B) on-failure
  • (C) unless-stopped
  • (D) All of the above

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