技术在快速发展进步。因此，我们建立了易于使用的术语汇编，帮助您更好地了解影响您业务的术语、技术和趋势。
Layer 2 of the OSI reference model. This layer takes data from the network layer and passes it on to the physical layer (layer 1). The data-link layer is responsible for transmission and reception of Ethernet frames, 48-bit addressing, etc. It includes both the media access control (MAC) and logical link control (LLC) layers.
