The Bottom Layers In Ethernet and Wi-Fi networks, the data link layer is split into two sublayers. The Logical Link Control (LLC) is an interface to the Media Access Control (MAC) layer.

No matter what the data rate or distance of span, all of these links must be monitored and tested to ensure that both physical and data link layer functionality are within specification. Direct Attach ...

Data link layer. LAN architecture ... Most new broadband services, even though not a LAN, have standardized on the 802.3 frame type and 10/1000/1000Mbit/sec. physical interfaces.

The data link layer is where the optionally scrambled octets are encoded to 8b/10b characters and is also the layer where control character generation or detection is done for lane alignment ...