CompTIA Network+ N10-009 (V9) Practice Question

A NAT gateway allows multiple hosts that use private IP addresses to initiate connections to external networks (such as the Internet) by translating each internal address to the gateway's public address (SNAT). This conserves public IPv4 space and hides internal addressing from outside hosts.

Network Access Control (NAC) products enforce security policies to determine whether a user or device is permitted onto the network, but they do not perform address translation. A DHCP server dynamically leases IP addresses and other TCP/IP settings to hosts. An Internet gateway acts as the edge router that routes traffic between a network and the Internet; it carries out one-to-one translation for resources that already have public IPs, but it does not let private-only addresses reach the Internet without a separate NAT device.