How do you specify a command to be executed when a Docker container starts using a Dockerfile?
ENTRYPOINT
CMD
RUN
ENV
What is the purpose of Dockerfile in Docker?
To store container logs
To define the steps for building a Docker image
To run a Docker container
To manage Docker networks
What is the function of the Docker Client?
It manages the Docker daemon on a remote host
It defines the application and its dependencies in a Dockerfile
It stores and distributes Docker images
It provides a user interface for interacting with the Docker daemon
You want a container to have NO network access at all. Which Docker networking mode should you use?
Host
Isolate
Bridge
None
What command initiates the building of a Docker image from a Dockerfile?
docker compile
docker create
docker build
docker make
You've pulled an image named 'my-app-image'. How would you start a container from this image and give it the name 'my-app-container'?
docker run -d my-app-container my-app-image
docker run -it my-app-image -n my-app-container
docker run --name my-app-container my-app-image
docker run my-app-image my-app-container
After stopping a container, you want to remove it completely. What command should you use?
docker rm
docker remove
docker delete
docker erase
What is the key difference between Docker and a virtual machine?
Docker is primarily used for development, while VMs are used for production
Docker containers share the host OS kernel, while VMs have their own kernel
Docker is used for hardware virtualization, while VMs are used for software virtualization
Docker provides a graphical user interface, while VMs do not
Which Docker network driver allows a container to share the host's network stack, effectively making it appear as if the container's processes are running directly on the host?
Macvlan
Overlay
Which Dockerfile instruction is used to define the base image for a new Docker image?
COPY
FROM
WORKDIR