Mobile devices frequently only have a FireWire port

Which of the following provides access to one or more applications through a single centralized interface?

A. Remote access portal B. Virtual private network C. Network access control system D. DMZ

Which of the following function prototypes is valid?

A. int funcExp(int x, float v); B. funcExp(int x, float v){}; C. funcExp(void); D. int funcExp(x);