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Layers in design of backbone

Name the three technology layers in backbone design? List the favoured technologies used in each of such layers.

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Three technology layers in the backbone design are as:

1. Access layer- i.e.  LANs
2. Distribution layer- This is the part of backbone design which connects the LANs together
3. Core layer-This connects the different backbone networks together.

The most effective in terms of cost and simplicity of the architecture:

  • Access layer i.e LANs uses 100Base T Ethernet switches
  • Distribution layer uses switched backbone
  • Core layer uses routed backbone
  • VLAN is also a popular choice now a days but it adds to the cost and complications in the system

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