Docker Image Management Quiz

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3. Which command creates a new image from a running container's changes?

Docker commit

Docker save

Docker export

Docker snapshot

4. What does CMD differ from ENTRYPOINT in terms of container startup?

ENTRYPOINT is always executed; CMD can be overridden

CMD is always executed; ENTRYPOINT can be overridden

They are identical

ENTRYPOINT only works with shell form

5. True or False: Docker images can be shared across different machines and operating systems.

True

False

6. Which command shows detailed information about an image, including layers?

Docker inspect

Docker describe

Docker info

Docker details

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8. Which command retrieves an image from a registry without running it?

Docker pull

Docker fetch

Docker download

Docker get

9. True or False: An image layer becomes immutable once it is created.

True

False

10. Which instruction sets the default command to run when a container starts?

CMD

RUN

EXEC

START

11. Which command creates a Docker image from a Dockerfile in the current directory?

Docker build .

Docker create .

Docker compile .

Docker make .

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

Documents which ports the container listens on

Actually publishes ports to the host

Opens firewall rules

Connects to external networks

13. Which command pushes a local image to a Docker registry?

Docker push

Docker upload

Docker send

Docker deploy

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15. Which command removes an image from your local system?

Docker rmi

Docker rm

Docker delete

Docker remove image

16. What is the purpose of a .dockerignore file?

Exclude files from the build context

Specify which images to ignore

Prevent container startup

Define network policies

17. Which command lists all images stored locally on your system?

Docker images

Docker list

Docker show images

Docker get images

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19. Which flag tags an image with a custom name and version?

-t or --tag

-n or --name

-v or --version

-l or --label

20. What does the FROM instruction in a Dockerfile specify?

The base image to build upon

The working directory

The exposed ports

The entry point command

Docker Associate Docker Image Management Quiz

1. Multi-stage builds in Docker help reduce final image size by separating ____ and runtime stages.

2.

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

2. Image layers are stacked in a ____ fashion, where each layer builds on the previous one.

3. Which command creates a new image from a running container's changes?

4. What does CMD differ from ENTRYPOINT in terms of container startup?

5. True or False: Docker images can be shared across different machines and operating systems.

6. Which command shows detailed information about an image, including layers?

7. The WORKDIR instruction sets the ____ directory inside the container.

8. Which command retrieves an image from a registry without running it?

9. True or False: An image layer becomes immutable once it is created.

10. Which instruction sets the default command to run when a container starts?

11. Which command creates a Docker image from a Dockerfile in the current directory?

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

13. Which command pushes a local image to a Docker registry?

14. COPY and ADD instructions in a Dockerfile differ in that ADD can ____ files from remote URLs.

15. Which command removes an image from your local system?

16. What is the purpose of a .dockerignore file?

17. Which command lists all images stored locally on your system?

18. The RUN instruction in a Dockerfile executes during image ____.

19. Which flag tags an image with a custom name and version?

20. What does the FROM instruction in a Dockerfile specify?