Networks

Networks

1. ADVANTAGES OF NETWORKS

   • HAVE ALL THE FILES SAVED ON EVERY COMPUTER
   • DONT HAVE TO A CERTAIN COMPUTER TO DO SOMETHING
   • YOU CAN USE THE SAME USERNAME AND PASSWORD ON ALL COMPUTERS

2. DISADVANTAGES OF NETWORKS

   • IT COULD ALL BE COURRPTED BY ONE VIRUS
     • LOTS OF MONEY
   • EXPERT NEEDED TO FIX COMPUTERS IF NEEDED TO
     • IF ONE WIRES FAILS ALL THE COMPUTERS FAIL

3. TYPES OF NETWORKS

   • LAN-LOCAL AREA NETWORK A NETWORK IN A SMALL AREA OR SINGLE ORGANISATION
   • WAN-WIDE AREA NETWORK A NETWORK THAT SPANS A LARGE AREA OR MULTIPLE ORGANISATIONS

4. TOPOLOGIES

   • BUS
     • CHEAP
     • LOTS OF COLLISIONS
     • ITS A BIT LIKE A BUS IT DEPENDS ON ONE SERVER
   • STAR
     • LOW CHANCE OF FAILURE
     • DEPENDS ON ONE SWITCH
     • ALL THE COMPUTERS ARE CONNECTED FOR ONE SWITCH AND COULD FAIL
   • RING
     • HIGH CHANCE OF CATASTROPHIC FAILURE
     • NO COLLISIONS(FAST)
     • ITS LIKE A RING WITH THE MAIN SOURCE BEING SERVER

5. IP ADDRESS'S

   • THERE ARE 4,294,967,296
   • The purpose of an IP address is to handle the connection between devices that send and receive information across a network
   • a unique string of characters that identifies each computer using the Internet Protocol to communicate over a network.
   • An IP address is a string of numbers separated by periods

6. INTERNET

   • BY A MESH APOLOGY
   • BUS
   • VIA THE CLOUD
   • THE INTERNET IS A HUGE GLOBAL INTER-CONNECTED NETWORK OF DEVICES