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WEEK 2: NETWORKING MODEL, "trailer, Data, Source address, destination…

- - - - Physical characteristic of interface & media
      - representation of bits
      - data rate
      - synchronization of bits
  - - - framing
      - physical addressing
      - flow control
      - error control
      - access control
  - - - logical addressing
      - routing
  - - - port addressing
      - segmentation & reassembly
      - connection control
      - flow control
      - error control
  - - - allows 2 systems to enter into a dialog (com. between 2 process)
    - - allow a process to add checkpoints into a stream of data