Networks

Networks

1. LAN

   • Local Area Network
   • A network set in a small geographical location
   • Not a great range

2. WAN

   • Wide area network
   • A network set in a large geographical location

3. Topology

   • Bus
     • cheap and easy to use
     • Can easily be attacked by malware
     • If 1 wire shuts down, the whole thing collapsed
     • Data can clog up
   • Star
     • Expensive and hard to setup
     • Data is easy to transfer
     • Hard to be attacked by malware
     • If 1 shuts down, the rest still work
   • Ring
     • All the computers are connected in a ring, and only go 1 direction
     • Stops clogging up of data
     • High chance of catastrophic failure

4. Advantages

   • Cheap and easy to use and set up
   • Has a great range with multiple computers
     • Files are spread between computers

5. Disadvantages

   • Expensive and difficult to set up
   • If hacked, malware can spread

6. I.P address

   • I.P addresses are in a format of 32 bits
   • Every I.P address is completely unique
   • There are 2 types of I.P address, internal and external
   • They convert I.P addresses into decimals. Example: 69.21.42.123
   • The 32-bit binary can not go over 255

7. The internet

   • Packets
     • Pieces of data split up
     • Used to send images
     • They can be lost or hacked, meaning they can make an incomplete image