1.4 Networks

1.4 Networks

1. LAN

   • Computers are all connected together in a single building
     • Home
     • School
     • Shops
     • This is done through the use of cables

2. WAN

   • Computers are connected over a large area, more than a single building
     • Global connection
     • Internet
     • Uses external hardware
       • Satalites
       • Internet
       • Phone lines

3. Client Server

   • Used to share data
   • relies on central server
   • All devices request service from the server e.g printer service
   • requires additional hardware
   • Workers can access files when files stored on central server
   • Central server can back every device at once
   • Every devices receives protection when security is installed on central server

4. Peer - peer

   • All computers have equal status
   • Each device can act as a server
   • only requires software to set up network
   • Users have to log on the same device
   • Responsible for own back ups
   • Have to install individual security