Which command would you use to list all active Docker containers?

The command used to list all active Docker containers is "docker ps." This command provides a summary of the containers that are currently running, displaying details such as container ID, names, status, and ports.

The "docker ps" command is fundamental in Docker management as it helps users quickly identify which containers are active, ensuring they can monitor or manage their workloads effectively. It can also be utilized with additional flags, like "-a," to include all containers, regardless of their running state, indicating its versatility in usage.

Other options, like "docker list," "docker containers," and "docker show," are not valid Docker commands for listing active containers. Each of these does not exist in the Docker command set, thus emphasizing the importance of knowing the correct command syntax to effectively operate within Docker.