安全工程师《安全生产技术》知识精华(25)

数据链路(datalink)除了物理线路外，还必须有通信协议来控制这些数据的传输。若把终结这些协议的硬件和软件加到链路上，就构成了数据链路

(In addition to the physical line, the data link must also have a communication protocol to control the transmission of these data. If the hardware and software that terminate these protocols are added to the link, a data link is formed)

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