data link layer

data link layer

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data link layer

Source: The Free On-line Dictionary of Computing (27 SEP 03)

	data link layer
     
         Layer two, the second lowest layer in the OSI
        seven layer model.  The data link layer splits data into
        frames (see fragmentation) for sending on the physical
        layer and receives acknowledgement frames.  It performs error
        checking and re-transmits frames not received correctly.  It
        provides an error-free virtual channel to the network layer.
        The data link layer is split into an upper sublayer, Logical
        Link Control (LLC), and a lower sublayer, Media Access
        Control (MAC).
     
        Example protocols at this layer are ABP, Go Back N,
        SRP.
     
        (1995-02-14)