Network

Network

1. Disvantages

   • cost
     • extra hardware and wiring is needed
   • maintaining network
   • viruses
     • it's easy too get a virus and hard too get it away
   • difficuilt as requires a tech expert
     • would have too pay too get it done

2. Advantages

   • send files too printers and too other people's emails
   • have the same files on different computers using ther same username and password
   • make your own username too use for different computers

3. LAN

   • local networks from only one organisation that is only for one area
   • WAN
     • a wide area network from multiple organisations from around the world

4. Topology

   • bus topology
     • advantages, cheap to install
     • disadvantages, high chance of catastrophic failure
   • Star topology
     • fast so low chance of collisions and easy to add new computers

5. IP address

   • an IP address is a unique value assigned to every computer
   • messages on a network have an IP address attahced, so computers know it's for the right computer

6. the internet

   • the internet is a giant mesh of computers
   • There are multiple different routes between any two nodes
   • It is impossible to break the internt, since another route can always be found
   • Packets
     • Data is split into small chunks called packets
     • Each packet is sent along the lowest cost route
     • The packets are re-assembled on the other side