QuizApi - Common Docker Images Questions

Question 1

Correct Answers: 1/4

What is a Docker image?

A running instance of a Docker container

A script to start a container

A network configuration for Docker

A snapshot of a container's configuration and dependencies

Question 2

Correct Answers: 1/4

What is the purpose of the `docker pull` command?

It uploads an image to the registry

It removes an image from the local system

It builds an image from a Dockerfile

It downloads an image from the registry

Question 3

Correct Answers: 1/4

Which command is used to view all Docker images stored on the local machine?

docker ps -a

docker ls

docker show images

docker images

Question 4

Correct Answers: 1/4

What is the purpose of tagging a Docker image?

It allows multiple versions of an image to be distinguished

It increases the image size

It assigns a unique ID to a container

It runs the image with a specific name

Question 5

Correct Answers: 1/4

How can you remove an unused Docker image from your system?

docker rm <image_id>

docker delete <image_id>

docker remove <image_id>

docker rmi <image_id>

Question 6

Correct Answers: 1/4

What is the difference between a container and an image in Docker?

An image is a running instance, while a container is an inactive snapshot

A container is a template, and an image is a running instance of that container

There is no difference

An image is a template, and a container is a running instance of that template

Question 7

Correct Answers: 1/4

What does the `docker commit` command do?

It starts a stopped container

It deletes a container

It uploads an image to the Docker registry

It creates a new image based on changes made to a container

Question 8

Correct Answers: 1/4

What is a best practice for keeping Docker images as small as possible?

Use large base images

Install all software in a single RUN instruction

Avoid using Dockerfiles

Use multi-stage builds and remove unnecessary files

Question 9

Correct Answers: 1/4

Which command builds a Docker image from a Dockerfile?

docker create -f Dockerfile

docker make <Dockerfile>

docker compile <image-name>

docker build -t <image-name> .

Question 10

Correct Answers: 1/4

How does Docker handle layers in images?

Docker combines all instructions into one layer

Layers are only created when a container is running

Docker does not use layers

Each instruction in a Dockerfile creates a new layer

Question 1

What is a Docker image?

Question 2

What is the purpose of the `docker pull` command?

Question 3

Which command is used to view all Docker images stored on the local machine?

Question 4

What is the purpose of tagging a Docker image?

Question 5

How can you remove an unused Docker image from your system?

Question 6

What is the difference between a container and an image in Docker?

Question 7

What does the `docker commit` command do?

Question 8

What is a best practice for keeping Docker images as small as possible?

Question 9

Which command builds a Docker image from a Dockerfile?

Question 10

How does Docker handle layers in images?

Finish Quiz