In which type of transaction is bandwidth used only between a receiver and a transmitter during active subscription?

The correct answer is unicast because, in this type of transaction, data is sent from one sender (the transmitter) to one receiver exclusively. When a unicast communication occurs, it establishes a dedicated pathway for the transmission of data packets, allowing bandwidth to be utilized directly between the two endpoints.

In the context of Dante networks, unicast transmission is vital for efficient audio data routing, as it ensures that the bandwidth is only utilized when the two devices are engaged in an active subscription, optimizing network performance. This dedicated connection contrasts with multicast and broadcast methods, which transmit data to multiple receivers simultaneously and can lead to bandwidth being spread across numerous devices, while anycast targets multiple potential receivers but only the nearest one for transmission.

By focusing on the direct connection between one transmitter and one receiver in unicast, network resources are managed more effectively, minimizing unnecessary data traffic and contributing to overall network efficiency.