They are not.
No, they were using Connectix BIOS, created by disassembling the real one, but different. ROM dumps are illegal.and included a bios of the console.
Mangos cannot run a server by itself: it won't even run. You need an absolutely illegal database data to setup the server.That thing is called MaNGOS and you can download a legitimate copy of it.
You cannot not to know those things. Why are you telling lies?