Quiz Details
QZ-20260521-78730
Topics:
Docker
Docker images
Difficulty:
Level 2 - Easy
Questions:
10
Language:
English (English)
Generated:
May 21, 2026 at 10:35 AM
Generated by:
Elli Watson
Instructions: Select an answer for each question and click "Check Answer" to see if you're correct. Then view the explanation to learn more!
1 What is Docker primarily used for?
Correct Answer:
A
Explanation: Docker is primarily used for containerization, which allows developers to package applications and their dependencies into containers for easy deployment.
Explanation: Docker is primarily used for containerization, which allows developers to package applications and their dependencies into containers for easy deployment.
2 Which command is used to list all Docker images on your local machine?
Correct Answer:
C
Explanation: The command 'docker images' is used to list all the images stored locally on your machine.
Explanation: The command 'docker images' is used to list all the images stored locally on your machine.
3 What file format is used to define a Docker image?
Correct Answer:
C
Explanation: A Docker image is defined by a Dockerfile, which contains a set of instructions for building the image.
Explanation: A Docker image is defined by a Dockerfile, which contains a set of instructions for building the image.
4 Which of the following is a benefit of using Docker images?
Correct Answer:
C
Explanation: One of the main benefits of using Docker images is faster application deployment, as containers can be started quickly with all dependencies included.
Explanation: One of the main benefits of using Docker images is faster application deployment, as containers can be started quickly with all dependencies included.
5 What command is used to create a Docker image from a Dockerfile?
Correct Answer:
C
Explanation: The 'docker build' command is used to create a Docker image from the instructions defined in a Dockerfile.
Explanation: The 'docker build' command is used to create a Docker image from the instructions defined in a Dockerfile.
6 Which command is used to run a Docker container?
Correct Answer:
D
Explanation: The 'docker run' command is used to create and start a container from a Docker image.
Explanation: The 'docker run' command is used to create and start a container from a Docker image.
7 What is the purpose of tagging a Docker image?
Correct Answer:
A
Explanation: Tagging a Docker image allows you to assign a human-readable name and version to the image, making it easier to manage.
Explanation: Tagging a Docker image allows you to assign a human-readable name and version to the image, making it easier to manage.
8 What does the command 'docker pull' do?
Correct Answer:
D
Explanation: The 'docker pull' command is used to download an image from a Docker registry to your local machine.
Explanation: The 'docker pull' command is used to download an image from a Docker registry to your local machine.
9 Which of the following is a popular Docker registry?
Correct Answer:
C
Explanation: Docker Hub is a popular public registry that allows users to share and distribute Docker images.
Explanation: Docker Hub is a popular public registry that allows users to share and distribute Docker images.
10 What is the main benefit of using Docker over traditional virtualization?
Correct Answer:
C
Explanation: Docker provides faster startup times compared to traditional virtualization because containers share the host OS kernel, which reduces overhead.
Explanation: Docker provides faster startup times compared to traditional virtualization because containers share the host OS kernel, which reduces overhead.