WAN is Wide area network

VAN is value add network

We have two kinds of networks, 1) LAN (local area network), within a floor, building etc., it needs transportion media(wires, fiber optic etc. for communation between network.

2) WAN (wide area network), could be within company with different locations, in one city, country or worldwide. It also needs a media for communication, like internet (phone lines) or any other source like VAN. VAN is provided by third party severvice providers, like in canada we have rogers, or bell.

Internet is public, less secure, less expensive but fast

VAN is private, more secure, slow, and expensive becuase its private.

hope it helps! 

I just put a note please see that one...

I think I did well, but its CPA, lets see what happens.

Good Luck