Networks

• WAN:

  Wide Area Networks

  • distributed over multiple buildings and sites
  • Will use infrastructure and services that are NOT owned by the individual or business (3rd part infrastructure - public telephone lines, mobile networks)
  • The owner of WAN will have to pay 3rd-party businesses and rely on their services.
• network: a group of computer devices that are able to communicate with each other
• networks are used for several reasons:

  1. sharing files between devices
  2. allows data and peripherals to be shared
  3. support collaborative working
  4. sharing hardware and software
  5. abilities to backup
  6. central maintenance and support
• LAN

  Local Area Network

  • smaller network that does NOT use 3rd party infrastructure and services
  • May still be distributed over multiple buildings and sites but cables and connections will be owned by an individual or business.
  • benefit -> wont have to rely on others
• Ip address:

  A unique address for each computer device on a network

  -destination address
• bandwidth:


  the maximum possible data transfer rate of network or internet connection
• computing units:

  
• $filesize =$$(sampling frequency * bit depth * length)$
• bus topology:

  
• star topology:

  
• mesh topology: