Which term refers to the capacity of data transfer measured by bitrate?

The term that refers to the capacity of data transfer measured by bitrate is "bandwidth." Bandwidth essentially defines the maximum rate at which data can be transferred over a network connection at any given time, and it is commonly expressed in bits per second (bps). When discussing networking and data transmission, bandwidth indicates the upper limit of data transfer capabilities, influencing the overall performance and capacity of the network.

While related concepts like latency and throughput are crucial in understanding network performance, they differ significantly from bandwidth. Latency refers to the time delay experienced in data transmission, whereas throughput is the actual amount of data successfully transmitted over a network within a specified timeframe. Data rate, while often used interchangeably with bandwidth, can refer to the speed of data transfer in any context and does not exclusively define the maximum capacity of a network. Thus, bandwidth specifically captures the concept of data transfer capacity in relation to bitrate.