CompTIA 220-801 Certification Practice Test

Answer - A - The NAT overloading feature maps multiple IP addresses to a single globally registered address.

Key Takeaway: If you only have one public IP address on the NAT device and need to use that for all private addresses on the LAN, then you will need to overload the public address with multiple private addresses. NAT overloading is used when each of the private IP addresses is translated to the one public IP address, essentially overloading the public address.