QuizApi - Advanced Docker Quiz: Docker Commands, Networking, and Container Management

Question 1

Correct Answers: 1/4

What is the purpose of using the `HEALTHCHECK` instruction in a Dockerfile?

To provide default resource limits for the container

To define checks that determine whether a container is healthy or not

To log container health metrics

To set a specific runtime limit for the container

Question 2

Correct Answers: 1/4

Which flag should be used with `docker run` to automatically remove a container once it stops?

--clean

--detach

--auto-delete

--rm

Question 3

Correct Answers: 1/4

How does Docker manage data in a container when using a `bind mount`?

It creates a temporary file system inside the container

It provides read-only access to data from the host

It directly maps a host directory to the container, allowing read-write access

It stores data in a Docker-managed directory on the host

Question 4

Correct Answers: 1/4

In Docker, what is the purpose of the `docker exec` command?

To build an image from a Dockerfile

To execute commands inside a running container

To restart a stopped container

To start a new container

Question 5

Correct Answers: 1/4

What does the `docker system prune` command do?

Clears the Docker cache

Removes only stopped containers

Deletes all running and stopped containers

Removes unused images, containers, networks, and volumes

Question 6

Correct Answers: 1/4

How does Docker handle networking in a container when using the `None` network mode?

It only allows communication with linked containers

It provides full isolation with no networking enabled

It connects the container to the host network directly

It connects the container to a bridge network without internet access

Question 7

Correct Answers: 1/4

What is the function of a multi-stage Docker build?

To run multiple containers in parallel

To include multiple base images in a single image

To reduce the final image size by copying artifacts from intermediate stages

To cache intermediate layers for faster builds

Question 8

Correct Answers: 1/4

In Docker Compose, how does the `depends_on` option influence container startup?

It forces Docker to restart containers upon failure

It specifies only the startup order but not readiness or health checks

It creates a network link between the dependent services

It ensures that dependent services are healthy before starting

Question 9

Correct Answers: 1/4

Which Docker networking mode allows containers to share the host's IP address and network namespace?

None

Host

Overlay

Bridge

Question 10

Correct Answers: 1/4

What is the purpose of the `--no-cache` option in the `docker build` command?

It caches only the base image layer

It caches only the final layer of the build

It removes all intermediate layers after the build completes

It skips using the build cache entirely, forcing Docker to rebuild each layer

Question 1

What is the purpose of using the `HEALTHCHECK` instruction in a Dockerfile?

Question 2

Which flag should be used with `docker run` to automatically remove a container once it stops?

Question 3

How does Docker manage data in a container when using a `bind mount`?

Question 4

In Docker, what is the purpose of the `docker exec` command?

Question 5

What does the `docker system prune` command do?

Question 6

How does Docker handle networking in a container when using the `None` network mode?

Question 7

What is the function of a multi-stage Docker build?

Question 8

In Docker Compose, how does the `depends_on` option influence container startup?

Question 9

Which Docker networking mode allows containers to share the host's IP address and network namespace?

Question 10

What is the purpose of the `--no-cache` option in the `docker build` command?

Finish Quiz