Docker Certified Associate Practice Test

1. Which Docker command creates a new container from an image without starting it?

Docker create

Docker build

Docker init

Docker prepare

2. What is the primary purpose of a Dockerfile ENTRYPOINT instruction?

Define the default working directory

Specify the command that runs when the container starts

Set environment variables for the image

Copy files into the container

3. In Docker networking, what does the bridge driver provide by default?

Host network access for all containers

Isolated network between containers on the same host

Direct connection to the Docker daemon

Port forwarding to external networks

4. Which Docker storage driver is recommended for production environments on Linux?

Aufs

Overlay2

Devicemapper

Btrfs

5. What command lists all running containers on a Docker host?

Docker ps

Docker list

Docker show

Docker containers

6. A Docker volume persists data even after a container is removed.

True

False

7. Which Docker Swarm role manages the cluster and orchestrates services?

Manager node

Worker node

Leader node

Master node

Submit

9. What is the maximum number of Swarm manager nodes recommended for high availability?

3

5

7

9

10. Docker images are built in layers, with each instruction in a Dockerfile creating a new layer.

True

False

11. Which flag allows a container to run with elevated privileges?

--privileged

--sudo

--elevated

--admin

Submit

13. Which command initializes a Docker Swarm on a host?

Docker swarm init

Docker swarm start

Docker swarm create

Docker swarm activate

14. Docker images can be pushed to a registry using the docker push command.

True

False

15. What does the EXPOSE instruction in a Dockerfile do?

Publishes ports to the host

Documents which ports the container listens on

Opens firewall ports

Maps container ports to host ports

Docker Certified Associate Practice Test

1. Which Docker command creates a new container from an image without starting it?

2.

What first name or nickname would you like us to use?

2. What is the primary purpose of a Dockerfile ENTRYPOINT instruction?

3. In Docker networking, what does the bridge driver provide by default?

4. Which Docker storage driver is recommended for production environments on Linux?

5. What command lists all running containers on a Docker host?

6. A Docker volume persists data even after a container is removed.

7. Which Docker Swarm role manages the cluster and orchestrates services?

8. The docker commit command creates a new ____ from a container's changes.

9. What is the maximum number of Swarm manager nodes recommended for high availability?

10. Docker images are built in layers, with each instruction in a Dockerfile creating a new layer.

11. Which flag allows a container to run with elevated privileges?

12. A bind mount in Docker maps a host directory to a container ____ path.

13. Which command initializes a Docker Swarm on a host?

14. Docker images can be pushed to a registry using the docker push command.

15. What does the EXPOSE instruction in a Dockerfile do?