The various network device drivers run at the interface layer, which receives and transmits data from and to the physical link.
各种网络设备驱动程序在接口层运行，该层从物理链路接收数据，并向物理链路传输数据。
TLI Is a programming interface to the transport layer of ISO-OSI model, it supports the transfer of data between two user processes in network.
TLI是ISO-OSI模型的传输层的一个编程界面，支持网络中两个用户进程间的数据传送。
When the network interface receives a packet from the layer above, it adds a preamble and CRC.
当网络接口层从它的上一层收到一个数据包时，它就加上一个前同步信号以及循环冗余校验（CRC）。
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