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basic concept of network - Coggle Diagram

- - - - wireless modem
        
        network cards
        
        wireless access points
        
        routers
        
        hubs
      - DSL Modem
      - ISDN Modem
      - Cable Modem
  - - - fibre optic cable
      - coaxial cable
      - twisted pair cable
    - - broadcast radio
      - cellular radio
      - microwave
      - communication satellite
      - infrared