1.4 wired and wireless network

1.4 wired and wireless network

1. Keywords

   • DNS
   • Hosting
   • The cloud
   • Virtual Network
   • VPN

2. LAN & WAN

   • LAN - local area network
     • computers are connected together over a small geographical such as single building or single site
     • eg home ,network , school network, network in a shop ,
   • WAN - wide area network
   • The difference between LAN and WAN is that LAN is local and WAN is world wide

3. CLIENT SERVER & PEER PEER

   • relies on central server
   • all clients(devices) request services from server
   • Workers can access files from any computer

4. SWITCH

   • if two or more computers place a packet onto a network at the same time a data collision occurs