Each computer connected to the Internet is assigned what unique identifier for data delivery?

An IP Address is the unique identifier assigned to each device connected to the Internet to facilitate data delivery. It serves as an address that allows devices on different networks to identify and communicate with each other, ensuring that data packets reach their proper destination. IP addresses come in two versions: IPv4 and IPv6, which include numeric and alphanumeric formats, respectively.

While MAC Addresses are unique to network interfaces and are crucial for local data communications within a network, they are not used for routing information over the Internet. Domain Names serve as human-friendly representations of IP addresses but do not themselves provide the actual address needed for data delivery. Port Numbers help direct data to specific services or applications on a device but do not identify the device itself over the Internet. Therefore, the IP Address is fundamentally essential for the proper routing of data between devices on the Internet.