3.4 - Methods of Connection

There are many methods to connect to a network. Each for different ranges and proximities:

Ranged connection methods:

• LAN: Local Area Network - A fast connection for devices in close proximity to each other, such as within a building
• LANs are hard to intercept
• LANs only work within a small area
• WAN: Wide Area Network - A network for devices located within a very large area, such as countries
• WANs have a very large range; they can stretch globally
• WANs are relatively slow in transfer
• MAN: Metropolitan Area Network - A network for devices within a medium range, such as within a city
• MANs support fast, fibre optic connection within cities
• MANs are more expensive and slower than LANs

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Data transfer methods:

• ADSL: Asymmetric Digital Subscriber Line - A network connection method involving the use of copper telephone wires to transfer data to a modem
• Leased Line: A secure telecom network between two locations involving the connection from the internet server to the ISP and then to the router within the premises
• ISDN: A connection involving the transfer of audio and video over copper wires from the network into a hub
• Satellite: A slow but very wide PtMP connection involving the transfer of data from devices to satellites in space

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Audio transfer methods:

• PSTN: Public Switched Telephone Network - The global telephone network that transfers voice data using copper telephone lines
• Cellular: The transmission of data from a tower to a device with line of sight