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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