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Network

Two or more computers linked together.  Connecting computers makes it possible for them to communicate with each other and to share resources.


Topology

The shape, or geometric arrangement, of a computer network.  Three common topologies are :
  • bus - each computer is connected to a central cable (called a bus or backbone).
  • ring - all of the computers are connected to form a closed loop; i.e. each computer is directly connected to only two other machines.
  • star - each computer is connected to a central hub; although this type of network is easy to set up and maintain, bottlenecks can occur since all data must pass through the hub.