Network via cable

No, the iPad has no built in ability to connect to Ethernet. However, you can use a small portable router. When I travel to Japan where the hotels all have Ethernet in the rooms but no WiFi, I take an AirPort Express. I preconfigure it but it can all be configured right from the iPad. It plugs into the LAN and then creates a WiFi network. There are other brands that are cheaper but the fact that this one has an app to configure it directly makes it worth the money for me.

Without knowing the part numbers, I can't be sure to what you're referring. However, it sounds like your talking about the adapter that works with the MacBook Airs. It plugs into the USB port on the MBA and enables you to connect to Ethernet. The iPad doesn't have a USB port. What you're talking about certainly wouldn't be a supported use.

I doubt it will work. And although I have those two items, I don't have ethernet to try them on. Sorry.