network

network

1. advantages of networks

   • file sharing, you wouldnt have to physically use a usb to share files

2. disadvantages of networks

   • wires and cables can be expensive
     • if the file server breaks down the files on it become inaccesible

3. types of networks

   • long area network
     • wide area network

4. topolygies

   • bus topolygy
     • advantages = very cheap disadvantages = high risk of failure/collisions (slow)
   • ring topolygy
     • advantages = cheap, no collisions
       • disadvantages = high rsk of catastrophie
   • star topolygy
     • advantages = low chance of failure (no collisions) fast
       • disadvantages = expensive
   • there is also a mesh topolygy it is the most used as all computers are connected
     • mesh topolygies are the most reliable
       • the internet is a mesh topolgy

5. ip addresses

   • ip stands for 'internet protocal'
     • it is a set of numbers used to be able to specify different devices
       • all IP addresses must be unique and there isn't enough IP addresses for all of the devices on the internet
         • we currently use IPV4 which gives us about 4.2 billion IP addresses the problem with this is there is not enough addresses for every device on the internet.
           • so we could upgrade to IPV6 which would allow us about 80 octillion IP addresses
             • it would be very expensive and would practically remake th internet