NETWORKS, HARDWARE AND COMMERCIAL USAGE

NETWORKS, HARDWARE AND COMMERCIAL USAGE

1. hardware and communication devices

   • routers
   • switches
   • hubs
   • network software
     • data transfer media
       • fibre optic cable
       • metal

2. data transfer media

   • metal wire
     • fibre optic cable
       • wireless

3. communication devices

   • prepares data for the sending over the network
     • sends the data
       • controls the flow of data
   • network interface card
   • a hub
     • used to join computers in a netwotk
       • allows connection of cables
         • allows the sharing of files and internet access
   • a switch
     • is similar to a hub but more intelligant
       • can look at a packet of data to decide where it should go
         • reduces the number of packets of data on a network, which speeds it up
   • a router
     • can be wired or wireless
       • is used to join several networks together
         • often used to connect several computers in the home to the internet

4. networks software

   • network operating systems - specialist operating systems designed specifically for networks
     • network management software - used to help a network manager run a network by keeping track of software