Video Description

Categorizing Computer Networks- Transmission Mode

  • Simplex
  • Half-Duplex
  • Full-Duplex
  • Geographical Area

    • Local Area Network (LAN)

      • Groups of computers connected in small geographical area
      • Area less than 3Km (one building)
      • Used to share files and services
      • High speed of communications
      • Under user administration control
      • Technology used

        • Ethernet
        • Token ring
    • Wide Area Network (WAN)

      • Group of computers connected in large geographical area
      • Low speed
      • Under ISP administrative control
      • Technology used

        • Dial-up
        • ISDN
        • DSL
        • X.25
        • Frame Relay
        • ATM
  • Administration Type

    • Peer-to-peer network

      • Host provide and consume network services
      • Each host has the same administrative privileges
    • Client/Server Network

      • Some hosts are assigned server roles
      • Server is superior in hardware and software
      • Servers provide network resources to hosts
      • Other hosts are assigned client roles
      • Clients consume network resources

Signaling Mode- Baseband

  • One signal at a time on network media
  • Digital local signal
  • Broadband

    • Divides network media into multiple channels
    • Allows several signals
    • Analog modulated signal

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