Protocols and Hardware
The Network Access layer is the most mysterious and least uniform of TCP/IP’s layers. It manages all the services and functions necessary to prepare the data for the physical network. These responsibilities include
Interfacing with the computer’s network adapter
Coordinating the data transmission with the conventions of the appropriate access method
Converting the data into a format that will be transmitted into the stream of electric or analog pulses across the transmission medium
Checking for errors in incoming data
Adding error-checking information to outgoing data so that the receiving computer can check the data for errors
Of course, any formatting tasks performed on outgoing data must occur in reverse when the data reaches ...
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