Loss of data because a receiving device is unable to accept data at the rate itis transmitted. 在数据通信中，由于接收设备不能按数据发送速率接收数据而造成的数据丢失。
A point-to-point line directly connects the sending and the receiving devices, and a multidrop line connects many devices, not just one sending device and one receiving device. 点到点线路直接连接发送和接收设备，而多点线路连接多个设备，而不仅仅是一个发送方设备和一个接收方设备。
