CompTIA Network+ Exam Review

Answer - A - The Overloading NAT maps multiple private IP addresses to a single registered IP address using different ports.

Key Takeaway: NAT Overloading, also known as PAT or Port Address Translation, uses a single or small number of public IP addresses to map internal private IP addresses. It differentiates between sessions based on the host’s port number. When a request from a client on the internal network is forwarded to its configured gateway, the gateway translates the source address and port number of the packet to use the router’s public IP address. NAT mappings are stored in the router’s NAT table.