>From the ISO networking layers...

http://www.uwsg.iu.edu/usail/network/nfs/network_layers.html

Layer 7 is for application protocols. This is where the transfer
protocols are found. They transfer application-specific information.

Layer 4 is for transport protocols. From the document linked above...

"Transport layer subdivides user-buffer into network-buffer sized
datagrams and enforces desired transmission control."

So it appears safe to say that "transfer" means moving whole
application-specific information, while "transport" means moving bits
that make up some or all of that application-specific information as
best fits the network technology.

-Patrick










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