Final NETWORKS mindmap

Final NETWORKS mindmap

1. Advantages of networks

   • Share files
     • So the same files are available whichever computer you use
   • share resources
     • Such as printers and internet connections.
   • Share logins
     • so that the same username and passwords can be used on every computer on the network

2. Types of networks

   • LAN
     • Local area network
     • A network in a small area or single organisation
   • WAN
     • Wide area network
     • A network that spans a large area or multiple organisations

3. Disadvantages of network

   • Cost
     • Networks are expensive to set up
   • Increased risk
     • Problems such as viruses can affect every computer on the network
   • Difficulty
     • Expertise is needed to set up and maintain a network

4. Topologies

   • Star topology- it is connected to a central switch, the switch directs the traffic to the appropriate computer, it’s fast however expensive
   • Ring topology - computers are connected to each other in a ring,communication only goes in one direction, no central cable, cheap to install, high chance of failure
   • Bus topology- The network consists of a single cable that runs through, all devices are attached to this cable, cheap to install, high chance of catastrophic failure

5. IP Addresses

   • An IP Addresses is used to identify your unique computer and is used to send and recieve messages
   • There are about 4,294,967,296 IP Addresses
   • The IP Address is a unique value assigned to every computer on a network used to identify it
   • The Catmose IP Address is 86.188.242.210

6. internet

   • Routes between nodes are chosen by their quickest time
   • Large file are sen in smaller parts and are merged together at the end
   • the internet is a giant mesh of computers
   • The internet is a mesh topology
     • messages can take many different routes to reach a destination