CMPS 002 - Computer Literacy

Prof. Paulo Franca

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Datacare   Ahshay

 
arpanet.jpg (8772 bytes) Simplified view of Arpanet
  • Relatively few but big computers
  • Each node is a computer + IMP
  • IMP takes care of net traffic
  • Each computer has an address
  • Messages split into packets by IMP
  • packets reassembled by IMP
  • IMP's keep track of who is reachable and through which route
  • You still needed to know how to interact with each computer.

 
How would you send a message...

from A to D? ...

A - B - C - D   or A - E - D ?

 Pioneer WAN