Final answer:
The interface arrangement for one Data Courier connection involves setting up client and server machines and establishing communication between them.
Step-by-step explanation:
The interface arrangement for one Data Courier connection involves the setup and configuration of client and server machines.
On the client side, the Data Courier connection can be established through a software application that communicates with a remote server.
On the server side, the Data Courier connection requires the installation and configuration of the server software that listens for incoming connections and handles data synchronization.