Could someone please settle an argument between my friend, 
and I?  Is it possible to increase the transfer rate 
between two computers by putting two network interface 
cards (NICs) in each computer, and putting two Ethernet 
connections on each computer, and connecting the two 
computers with two Ethernet cables?  I said that it would 
not, and may even slow transfer rates because the 
processor is switching between two NICs.  Also, since each 
computer can have only one IP address since each MAC 
address is unique, and that computer will process the 
packets of information it receives one at a time.  He 
thinks that the NICs have buffers in them that allow the 
packets of information to be stored until the CPU 
processes them.  So according to him, you can send a chunk 
of data faster by splitting it in half, sending the halves 
over two cables, and receive the halves with the other 
computer and NICs, and put the chunk of data back together 
again.  He thinks that transfer rates would increase if 
you increased the CPU speed, since each CPU could split 
the info and put it back together faster, and faster.  I 
told him that transfer rates are dependent upon the rate 
of your NIC and your transfer medium (ex. Ethernet, 
optical, wireless) and cannot be affected by simply adding 
more NICs and transfer mediums between two computers.  I 
think he's confusing processing rates with transfer rates.  
Whose right? 

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