Friday, September 19, 2014

Categories of Data Link Protocols-Cont


Multi Frames

Control Frames
o    A  control  frame  is  used  by  one  device  to  send  commands  to  or  to  get  information
from another device
o    A control frame contains control characters but no data
o    It carries information specific to the functioning of the data link layer itself
Control frames serve 3 purposes:

-    Establishing Connections
-    Maintaining Flow and Error Control during Data Transmission
-    Terminating Connection




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