You would connect them with ethernet cables and 1 or more switches. If you require more than 1 switch, you need to connect the two switches with an ethernet cable too.
Connect using Wi-fi instead.
Either use a crossover cable or connect them using a hub, switch, or router.
It's possible but doesnt' worth it, just buy a lan cable.
You can have a USB Serial (COM) port and you can connect PCs together using Serial (COM) port.
A wireless LAN does not need wires to connect; therefore, devices using a WLAN can be very mobile and are not constrained by physical wiring.
Nope. Don't think so. Try googling it.
Yes, if you connect them using a LAN cable.
If you mean, "What is a wireless LAN?" The answer is simple. A wireless LAN is a network that connects multiple computers, gaming consoles, and gaming devices and allows them to connect to the internet, but only if they are capable of using wireless. Wireless LAN is achieved by using a wireless router. LAN stands for Local Area Network.
Connect each device to a centralized LAN switch using UTP cabling
allows a single computer to connect to a LAN allows a single computer to connect to a LAN
Yes the DS does contain a wireless lan chip in it. With that you may connect with other players or chat using ad-hock mode.
First thing to check - are you actually connected to their LAN? It's not much use triyng to connect to a LAN game if you aren't.