In a multidrop line arrangement (a central computer and different terminals in which the terminals share a single communication line to and from the computer), the system uses a master/slave polling arrangement whereby the central computer sends message (called polling message) to a specific terminal on the outgoing line.
A network setup with multiple terminals connected through a central computer employs a master/slave inquiry technique. The central computer sends an inquiry signal to a particular terminal on the outgoing communication channel, allowing for efficient data exchange.