Docker MCQs with answers Page - 5

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

Explanation: The 'docker network create' command creates a new Docker network.

📊 Docker
Q. What is the purpose of the SHELL instruction in a Dockerfile?
  • (A) To specify the default shell for the container
  • (B) To define the base image
  • (C) To specify the working directory
  • (D) To copy files into the container
💬 Discuss
✅ Correct Answer: (A) To specify the default shell for the container

Explanation: The SHELL instruction specifies the default shell for the container.

📊 Docker
Q. Which command is used to list Docker networks?
  • (A) docker network ls
  • (B) docker list networks
  • (C) docker net ls
  • (D) docker show networks
💬 Discuss
✅ Correct Answer: (A) docker network ls

Explanation: The 'docker network ls' command lists all Docker networks.

📊 Docker
Q. What is the purpose of the ADD instruction in a Dockerfile?
  • (A) To copy files from the host to the container
  • (B) To copy files between containers
  • (C) To copy files from the container to the host
  • (D) To create a backup of the container
💬 Discuss
✅ Correct Answer: (A) To copy files from the host to the container

Explanation: The ADD instruction copies files or directories from the host into the container.

📊 Docker
Q. Which command is used to remove a Docker network?
  • (A) docker network rm
  • (B) docker remove network
  • (C) docker net rm
  • (D) docker delete network
💬 Discuss
✅ Correct Answer: (A) docker network rm

Explanation: The 'docker network rm' command removes a Docker network.

📊 Docker
Q. What is Docker Compose used for?
  • (A) Building Docker images
  • (B) Managing multi-container applications
  • (C) Monitoring Docker containers
  • (D) Creating container snapshots
💬 Discuss
✅ Correct Answer: (B) Managing multi-container applications

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

📊 Docker
Q. Which file format does Docker Compose use?
  • (A) JSON
  • (B) YAML
  • (C) XML
  • (D) INI
💬 Discuss
✅ Correct Answer: (B) YAML

Explanation: Docker Compose uses YAML files to define services and configurations.

📊 Docker
Q. What is the default name of the Docker Compose configuration file?
  • (A) docker-compose.yml
  • (B) compose.json
  • (C) dockerfile.yaml
  • (D) config.compose
💬 Discuss
✅ Correct Answer: (A) docker-compose.yml

Explanation: The default file name for Docker Compose configurations is 'docker-compose.yml'.

📊 Docker
Q. Which command is used to start services defined in a Docker Compose file?
  • (A) docker-compose build
  • (B) docker-compose start
  • (C) docker-compose up
  • (D) docker-compose init
💬 Discuss
✅ Correct Answer: (C) docker-compose up

Explanation: The 'docker-compose up' command starts services defined in the compose file.

📊 Docker
Q. How can you run Docker Compose in detached mode?
  • (A) docker-compose run -d
  • (B) docker-compose up -d
  • (C) docker-compose start -d
  • (D) docker-compose detach
💬 Discuss
✅ Correct Answer: (B) docker-compose up -d

Explanation: Using the '-d' flag with 'docker-compose up' runs the services in detached mode.

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