Frame Relay
DSL
sdasdf
WAN. LAN is a short range connection, WAN is wide range.
Serial
A dual wan load balancer is a router. Uses state of art redundancy and bandwidth load technologies. It allows fast and secure internet connection. It makes sure all internet activity is always managed and secure.
Wireless N
I am pretty sure that a WAN connection would not be needed for a home network. A WAN is a Wide-Area Network. A WAN would be used to connect to your business computer from home. A LAN is a Local-Area Network. It should be sufficient if the network is simply for sharing files or printers, etc.
A WAN is any technology used to connect networks at a greater distance. Without a WAN, your home - or in this case, your school - won't have a connection to the Internet.
ASDL
PSTN
The Demarcation point