The Data Link Layer is one of my favorite layers of the OSI Model. Like a father who loves ALL of his children equally, but in different ways, I also love the other layers, but Layer 2 will always ...

Not only is it important that the underlying electrical and optical connectivity of these components function properly, it's also critical that the data link layer operates within the established ...

The transmitted bits are divided into frames, most commonly Ethernet. Layers 1 and 2 are required for every type of communications. For more on this layer, see data link protocol.

On a shared medium, data link addresses are unique within the medium. In the enterprise, data link protocols provide functions such as finding a path and managing parallel paths.