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 define checks that determine whether a container is healthy or not

To set a specific runtime limit for the container

To log container health metrics

To provide default resource limits 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?

--detach

--rm

--auto-delete

--clean

Question 3

Correct Answers: 1/4

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

It provides read-only access to data from the host

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

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

It creates a temporary file system inside the container

Question 4

Correct Answers: 1/4

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

To execute commands inside a running container

To start a new container

To restart a stopped container

To build an image from a Dockerfile

Question 5

Correct Answers: 1/4

What does the `docker system prune` command do?

Removes only stopped containers

Removes unused images, containers, networks, and volumes

Deletes all running and stopped containers

Clears the Docker cache

Question 6

Correct Answers: 1/4

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

It provides full isolation with no networking enabled

It connects the container to a bridge network without internet access

It connects the container to the host network directly

It only allows communication with linked containers

Question 7

Correct Answers: 1/4

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

To include multiple base images in a single image

To cache intermediate layers for faster builds

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

To run multiple containers in parallel

Question 8

Correct Answers: 1/4

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

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

It ensures that dependent services are healthy before starting

It creates a network link between the dependent services

It forces Docker to restart containers upon failure

Question 9

Correct Answers: 1/4

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

Host

Bridge

Overlay

None

Question 10

Correct Answers: 1/4

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

It caches only the final layer of the build

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

It removes all intermediate layers after the build completes

It caches only the base image 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