networks

networks

1. advanteges

   • share login so the same username and password can be used on different computers
   • share files the file is avalible
   • share resources such as printers and internet connection

2. types of network

   • WAN wide area network
   • LAN local are network

3. disadvantages

   • expensive
   • difficult
   • malware

4. topologies

   • network topologies
     • advantages
       • cheap to install
     • disadvanteges
       • high chance of faliure and lots of collisions and slows down as more computers are added
   • ring topologies
     • advantages
       • cheap to install and no collisions (fast)
     • disadvantages
       • high chance of catastrophic faliure and difficult to expand
   • star topoloies
     • advantages
       • no collisions (fast) and low chance of faliure
     • disadvantages
       • expensive and depend on a switch

5. IP address

   • an IP address is a unique value assigned to every computer on a network, used to identify it
   • IP Addresses therefore range from 0.0.0.0 to 255.255.255.255
   • Unique addresses are assigned to businesses and houses
   • These houses and businesses run their own mini-network inside with different IP Addresses

6. IPv6

   • IPv6 is now coming into use. IPv6 uses 16 bits for each section of the address, creating a 128-bit address. This allows almost 80 octillion unique IP addresses.