What type of RN are you after you graduate?

Hi everyone. I graduated in 2008 as RN in Europe.I'm an international nurse and I'm preparing for Nclex Rn to take it very soon in US (Virginia).
I have a question? I've been asked many times what type of nurse are you? I answered Register nurse and they still ask me what specialty I have? I completed only nursing school for 4 years. No master.
What does that mean? Please.
All I know I'm general nurse, and I eligible to take Nclex Rn in US.
After i get the license what speciality I might be able to work?
I think they are just asking what kind of nursing do you want to do, such as pediatrics, med/surg, oncology. In the US, you can work in any specialty as a registered nurse. Then you can specialize in an area once you have experience in it.