Here's a comparison shot from "Where no one has gone before" that shows how the 2-foot model, which didn't have interior window lights, finally got those lights for the remastered version of the episode. Isn't that just excellent?
That looks like a CG shot to me.
Yeah, if you look really closely at the surface detailling and the outlines, it's not the same model. Damn close match though, great work. Very consistent with the shots of the 6-footer too.