networks

networks

1. LAN

   • A LAN is a Local Area Network – a network based in a small location or single organisation
     • this is good for if someone does hack a network it will effect more people
   • It contains one geographical area.

2. WAN

   • wide area network
   • It contains more than one geographical area.

3. advantages

   • it is quicker than not doing it
     • it would take a lot longer than if you used a network which takes a lot less time.
   • It takes less effort to do.

4. disadvantages

   • It can be hacked easily
     • This is because once one computer is infected all the other ones will be too.
   • It is expensive to install
     • This is because you get it from company's which cost a lot.
   • It is not stable.
     • It has only been made recently so it has not been experimented with.

5. topologies

   • ring topologies
     • difficult to expand
     • no collisions
     • cheap to install
   • bus topologies

6. IP address

   • • Each IP address on a network must be unique.
   • • The IP Address is unique value assigned to each computer on a network.
   • • When a computer is added to a network it is assigned an IP Address (Internet Protocol Address).
   • • Computers on a network also need an address to identify them.
   • The IP Address is a 32-bit binary value This means it’s made up of 32 1s and 0s Example: 00110101000110100110011010111011 While binary is perfect for a computer to use, it’s a pain for humans to use, so we convert it binary to decimal 8 bits at a time: 00110101000110100110011010111011 53.26.106.187

7. network navigating