NETWORKS

NETWORKS

1. LAN

   • Local Area Network
   • School

2. WAN

   • Wide Area Network
   • Internet

3. Advantages Of Networks

   • Sharing devices such as printers saves money
   • cheaper than buying several stand alone licenses
   • Easily shared

4. Disadvantages Of Networks

   • Cabling And File Servers Can Be Expensive
   • Managing a large network is complicated
   • viruses can spread throughout a computer network

5. TOPOLOGIES

   • BUS NETWORKS
     • workstations servers and printers are joined to one cable
     • terminator at each end of the cable
     • advantages and disadvantages
   • RING NETWORK
     • Each device is connected to to two other devices
     • forms a ring of signal
     • advantages and disadvantages
       • transfers data quickly
       • no data collision
       • if the cable fails the network will go down
   • STAR NETWORK
     • Each device has its own cable that connects to a hub
     • advantages and disadvantages:
       • if the cable is damaged only one device will go down
       • quick
       • expensive cable