Emergency Nurse Practitioner (ENP) Practice Test

How does NPA overlay offer additional phone numbers?

1. By assigning new numbers from a separate database

2. By activating dormant phone lines

3. By introducing a new area code in existing locations

4. By expanding the coverage area of existing phone networks

The correct answer is: By introducing a new area code in existing locations

NPA overlay offers additional phone numbers by introducing a new area code in existing locations. This allows for more phone numbers to be available without having to assign new numbers from a separate database, activate dormant phone lines, or expand the coverage area of existing phone networks. These alternatives may also be used to add more phone numbers, but they are not the primary function of NPA overlay. By introducing a new area code, NPA overlay provides a more efficient and organized approach to adding phone numbers in a specific geographic area.