Command Prompt: This is a black screen Application that provides CLI(Command Line Interface). One needs to enter the commands to this window and hit enter. Then the command will be sent to the System’s Shell. Shell is the actual command interpreter. You could open multiple Command Prompt windows and each will have distinct Process IDs. Their job is to only taking the Command from the User. Command Host: A Command is either the built-in one or external program. They need to communicate with the