What is the command used to validate the Docker version and configuration?

What is the command used to validate the Docker version and configuration?

• A. docker info
• B. docker check
• C. docker version
• D. docker version --format

Answer: (C)

You validate Docker installation and how it’s set up by checking the version information exposed by the CLI and the daemon. Running the version command prints both the client and server (daemon) versions, along with API versions and build details. Seeing version info for both sides confirms that the Docker CLI can reach the Docker daemon and that the components are installed and configured correctly. If this command succeeds, you’ve verified basic configuration and compatibility. The other options aren’t as direct for confirming version and connectivity: docker info shows broader environment and configuration details but isn’t focused on version numbers; docker check isn’t a valid Docker command; and docker version --format is a formatting variant of the same data, not the simplest way to confirm that both client and daemon are present and reachable.

You validate Docker installation and how it’s set up by checking the version information exposed by the CLI and the daemon. Running the version command prints both the client and server (daemon) versions, along with API versions and build details. Seeing version info for both sides confirms that the Docker CLI can reach the Docker daemon and that the components are installed and configured correctly. If this command succeeds, you’ve verified basic configuration and compatibility.

The other options aren’t as direct for confirming version and connectivity: docker info shows broader environment and configuration details but isn’t focused on version numbers; docker check isn’t a valid Docker command; and docker version --format is a formatting variant of the same data, not the simplest way to confirm that both client and daemon are present and reachable.