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12 IPT (multimedia (areas (education, leisure, information, Technology…

- - - - knowledge base
      - facts
      - inference engine
      - explanation mechanism
      - user interface
- - - - Application
      - Communication control & addressing
      - Transmission
    - - HTTP
      - TCP
      - IP
      - Ethernet
  - - - Twisted pair
      - Coax
      - Fibre optic
      - Wireless
    - - bps
      - baud
      - bandwidth
    - - Client-server
      - Physical
        
        Bus
        
        Star
        
        Ring
        
        Hybrid
        
        Mesh
      - Logical
        
        Bus
        
        Star
        
        Ring
    - - NIC
      - Repeater
      - Hub
      - Bridge
      - Switch
      - Gateway
      - Modem
      - Router
    - - Teleconferencing
      - Distance education
      - Wide area networks
        
        PSTN
        
        Internet
        
        Intranet/Extranet
      - Phone/Fax
      - VOIP
      - Email
    - - Parity
      - Checksum
      - CRC
    - - ATM
      - EFTPOS
      - Internet banking
    - - File
      - Mail
      - Print
      - Web
      - Proxy