Glossary

Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business.

Data-Link Layer

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.