Networks

Networks

1. Hardware

   • types and why they are needed
     • Router
       • So devices can connect to a central point of a local area network
     • Switch
       • like routers but can make a larger local area network
     • Modem
       • used to connect a network to router
     • Server
       • a computer which controls the internet

2. types of connections

   • ethernet
     • a cable with allows high speed data transfer
     • Data transfer speed: 1000m Mbps
     • Range:100M
       • Can be extended
     • network type: LAN
     • Advantage: Fasterconnections
     • Disadvantages: not very portable
   • Wifi
     • a wireless connection
     • data transfer speed: 250 Mbps
     • Network type: LAN
     • Range: 32m
       • Can be extended
     • Advantages: Can connect without wires which means if you where watching a program you can go around the house with it
     • Disadvantages: Slower connections which makes you wait longer to connect and do the thing you want.
   • Blue tooth
     • range: 10m
     • Data transfer speed: 25 Mbps
     • Network type: WPAN
     • Disadvantage: Used over a small range.
     • Advantage: Quick way to send photos
   • GPRS (4g,3g)
     • network type: WAN
     • Range: Over most of Uk
     • Data Transfer Speed: 3G=6 mbps 4G=14 mbps
     • Advantage: Can be used almost everywhere.
     • Disadvantage: Can be slow

3. Types of networks

   • LAN
     • A Local Area Network
     • covers places like a house or school
   • WAN
     • A Wide Area Network
     • PLaces like a city or the world
   • WPAN
     • Wide Area Network
     • Uses bluetooth