networks

networks

1. types of network

   • LAN
     • local area network
       • a network in a small area or single orginisation
   • WAN
     • wide area network
       • a network that spans a large area or multiple orginisations

2. Advantages of networks

   • You can log in to your account on any computer in the network
   • Your files are available on any computer in the network
   • You can print, use the internet, email and use the same software on every computer

3. Disadvantages of network

   • Networks are expensive to set up.
   • if one computer gets a virus it can affect all computers
   • Networks are difficult to maintain

4. Topologies

   • ring topology
     • A computer network where each device is connected to two other devices
   • Bus topology
     • A network where all the devices are connected by one central cable
   • Star topology
     • A network where all the devices are connected to a hub or switch

5. IP address

   • an IP address is a value that is unique and assigned to every computer
     • There are only a limited amount of IP addressess
       • in order to get around not having enough IP addresses orginisations such as schools only have one IP address

6. IPv6

   • IPv6 addresses consist of 128 bits instead of 32 bits
   • it is the internet protocol (IP) version 6
   • It provides an identification and location system for all computers on a network