data link level

from The Free On-line Dictionary of Computing (8 July 2008)

data link layer
data link level
layer 2

   <networking> 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)