The law does not address Open Carry.
That said, if you are being being forced to give name and DOB, you are being detained. Before complying, ask: "Why am I bring detained?"
Openly Carrying is not a licensed activity. You are not required to carry identification, nor are you required to identify yourself, or even converse with police unless they had reasonable, articulate suspicion of a crime.
Welcome to the forum! Sit back, and read, read, read the stickies and other threads in this Nevada section. You will find answers to questions you haven't thought to ask yet, too.
Buy a digital recorder and keep it running if you suspect you might be stopped and questioned. For the most part, NV is OC friendly on public property with some exceptions of some county and city parks that are in violation of the state law.