Voted Best Answer
Jun 05, 2015 - 05:46 PM
Cuál es su nombre is more official. You will hear it in official situations like when someone asks you for your name in a police station or at the social security desk,or in a hotel when the clerk is going to check you in. Cómo te/se llama/s tú/usted is what you'll hear when someone you meet is asking for your name.