Networks

Networks

1. advantages

   • consists user experience. you can log on to any computer in the school using the same username and password
   • your files are available on every computer you use, even if you created them on a different computer
   • you can print, use the internet,email and use the same software on any computer

2. disadvantages

   • expensive
     • extra hardware and wiring needed
   • difficult
     • it requires a technical expertise
   • malware
     • viruses and other malicious software can spread through a network

3. types of networks

   • LAN
     • local area network
     • a network contained in a single geographical
   • WAN
     • a wide area network
     • a network that spans a large geographical area or multiple organisations

4. topology networks

   • bus topology
     • advantage-cheap to install
     • disadvantages-high chance of catastrophic failure, lots of collisions & slows down as more computers are added
   • ring topology
     • advantages-cheap to install & no collision
     • disadvantages-high chance of catastrophic failure & difficult to expand
   • star topology
     • advantages-low chance of failure & no collision (fast)
     • disadvantages-expensive & it depends on a switch

5. IP Addresses

   • An IP Address is an unique value assigned to every computer on a network, used to identify it
   • Messages on a network have an IP Address attached, which is how a computer knows whether or not to keep the message