Lesson 5

Dates: 2/15/2017
Linux networking
Linux System Administration


Computers on the Internet



  • Network communication allows sending information, transfering files, and managing applications remotely between computers.
  • Networks are organized in a series of layers implemented on each machine.
  • The layers are independent and each layer offers a specific task to the neighboring layers above and below.
  • The communication between the layers is based on defined rules and procedures, called protocols.
  • Data is processed and passed through the layers from above to below, until the bottom layer is reached.
  • At the bottom layer, computers communicate with each other via sending and receiving network datagrams through cables, switches and routers.



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