Networks

Networks

1. types of network

   • WAN
     • wide area network
   • LAN
     • local area network
   • multiple geographical locations

2. advantages

   • people can share files between different computers
   • share usernames and passwords between computers
   • sharing resources between computers

3. disadvantages

   • viruses can spread easily
   • expertise is needed to set up the network
   • it is expensive to set up
   • high chance of collision

4. topology

   • access
   • bus
     • high chance of collisions
   • star
     • advantages
       • low chance of failure
       • no collisions(fast)
     • low chance of collisions
   • ring
     • half a chance of collisions
   • catastrophic failure

5. IP addresses

   • must be unique compared to different IP addresses
   • they can range from 0.0.0.0 to 255.255.255.255
   • it is most likely that as 5g is becoming more popular, that IP adresses will run out soon

6. internet

   • just a giant mesh of computers
   • impossible to break the internet
   • there are multiple different routes between any two nodes
   • spans the entire world