networks lesson 1

networks lesson 1

1. disadvantages

   • could get hacked
     • the server could get a virus and then all of the computers on the network would get whipped out
   • the computers could disconnect to the server

2. advantages

   • all the computers are on the same network so everyone can access the infomation if needed
   • if a computer gets a virus you could get the information back

3. types of networks

   • WAN
     • a WAN is a wide area network
   • LAN
     • a LAN is a local area network
       • a school

4. topologies

   • bus
     • a straight line starting and ending with terminators that different devices
       • disadvantages
         • high chance of data collision
         • high chance of catastrophic failure
         • very slow
     • advantages
       • cheap
       • 1 cable
   • ring
     • advantages
       • cheap
   • no data colllisisons
   • star
     • no data collisions
     • low chance catastrophic failure
     • advantages
     • disadvantages
     • expensive

5. IP address

   • An ip address An IP address is a unique address that identifies a device on the internet or a local network
     • All things connected on the same network have the same six digits of IP address
       • There are over 400million different IP addresses this was not enough so now you can fit 400 million IP addresses into 400 million sections