Networks

Networks

1. Disadvantages

   • Very expensive
   • Can be difficult
   • Mistakes can affect every computer
   • Viruses
   • Hacking

2. Advantages

   • Can log onto any computer using your details
   • Everything saved on one computer is saved on every computer

3. Types of Networks

   • WAN (Wide Area Network) A network over a wide area
   • LAN (Local Area Network) A network over a local area

4. Topologys

   • Bus Topology (A single cable that runs through different devices)
   • Ring Topology (Devices that are connected by a cable in a ring/circle shape)
   • Star Topology (All of the devices are connected to a switch in the middle of the star)

5. Mesh Topology (Where all of he devices are connected and touching all of the other devices)

6. IP Addresses

   • An IP Address is used to identify devices and connect them to the internet.
   • Every device connected to the internet has a different and unique IP Address.

7. Routing

   • Routing needs to be as cheap and easy as possible.
   • The best way through the mesh is found using algorithms.

8. Packets

   • Packets are small chunks of data.
   • Each of the packets are numbered independently.