Which of the following best describes what an organization would use port address translation for?

VLANs on the perimeter are used for segmenting networks, not directly for translating private IP addresses to public ones for internet access.

While a public address is involved, PAT's primary purpose is to translate non-routable internal addresses to that public address, not simply the presence of a public address.

Port Address Translation (PAT), also known as NAT Overload, is employed on a perimeter router to enable multiple internal devices using private, non-routable IP addresses to access the internet. It translates these private IP addresses and their source port numbers to a single public IP address and different port numbers, allowing many-to-one mapping.

Servers on the perimeter might use NAT, but PAT is specifically about translating multiple internal non-routable addresses to one public address, not just for servers.