What does UAA stand for in terms of MAC addresses?

UAA stands for Universally Administered Address in the context of MAC addresses. This term refers to MAC addresses that are designed to be globally unique and assigned by the manufacturer of the network interface card (NIC). These addresses are constructed in such a way that they can be used universally across different networks, ensuring that no two devices have the same MAC address.

This global uniqueness is important in networking, as it prevents address conflicts and ensures reliable communication between devices on a network. The structure of a UAA involves a specific format where the first half of the MAC address identifies the manufacturer (OUI - Organizationally Unique Identifier), while the second half is assigned by the manufacturer, ensuring that all devices produced under that identifier have distinct MAC addresses.

The other options, while they may sound plausible, do not align with the established terminology used in networking standards.