In the seven-layer OSI model of computer networking, the data link layer is layer 2. In TCP/IP reference model, it corresponds to, or is part of the link layer. The data link layer is the protocol layer that transfers data between adjacent network nodes in a wide area network or between nodes on the same local area network segment. The data link l...
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http://en.wikipedia.org/wiki/Data_link_layer
(NETWORK GLOSSARY) Layer two of the OSI reference model. This layer takes a raw transmission facility and transforms it into a channel that appears, to the network layer, to be free of transmission errors. Its main services are addressing, error detection, and flow control.
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https://www.encyclo.co.uk/local/20479
Layer 2 of the OSI reference model. This layer provides reliable transit of data across a physical link. The data link layer is concerned with physical addressing, network topology, line discipline, error notification, ordered delivery of frames, and flow control. The IEEE has divided this layer into two sublayers: The MAC sublayer and the LLC ...
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https://www.encyclo.co.uk/local/22803
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