computer networks

computer networks

1. bus

   • one straight line with stops
   • if one line breaks the hole thing stops
   • cheap
   • if more workstations are added it becomes slower

2. ring

   • if one brakes they all do
   • fast because no data collisions

3. star

   • A hub sends every packet of data to every device, whereas a switch only sends a packet of data to the destination device
   • uses a hub
   • fast
   • a lot of money

4. definition of a network

   • nodes
     • share data
   • linked up by cable or wireless
   • quickly contact and share data people on the same network

5. PAN

   • Personal area network
   • personal sharing of data
   • smallest type

6. LAN

   • local area network
   • covers a building

7. WAN

   • made up of lots of lans
   • massive

8. some are wired and some are not

   • fiber optics
     • glass
     • expencive
     • fast
   • wireless
     • easily interference
     • access without hassle