GCSE Networks

GCSE Networks

1. LAN

   • small geographical are on a single site
   • all hardware owned by the organisation that uses it
   • wired
     • ethernet cables
   • wireless
     • wifi
   • used in businesses schools and universities
   • used in lots of homes to connect various devices
   • The Positives
     • share files easier
       • work on them collaboratively
     • share the same hardware
     • internet connection shared between every device on lan
     • Install new software on computer all at once
     • communicate with other LAN users easily with instant messaging
     • User accounts are stored centrally
       • users can log in from any device on the network
   • Local Area Network

2. WAN

   • Wide Area Network
   • Connects Multiple LANs together
   • Requires organisations to hire infrastructure
     • E.g Communication Lines
     • Hired from telecommunication companies
       • Own and Manage WAN
     • WAN is much more expensive than LAN
   • Connected with fibre or copper telephone lines satellite links or radio links
   • The internet is an example of one big Lan

3. Hardware

   • NICs
     • Network Interface Controller
       • Internal piece of Hardware
     • Used to connect To a Network
       • Built into motherboard
       • Used for wired and wireless
   • Switches
     • Connect Devices on LAN
       • Receive and Transmit Data to the network with the correct MAC address
   • Routers
     • always connected to at leats 2 networks
     • Used in Homes and Offices
     • transmit data BETWEEN Networks
     • Connect LAN to the Internet
   • Hardware

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