What is typically the default form of a MAC address?

The default form of a MAC address is the Universally Administered Address (UAA). This type of MAC address is assigned by the manufacturer of the network interface card (NIC) and is designed to be unique across all devices globally. Each UAA is based on the Organizationally Unique Identifier (OUI) assigned to the manufacturer, combined with a unique identifier for the specific device.

This ensures that when devices communicate over a network, their MAC addresses can be used without conflict, allowing for proper identification and data transmission. In contrast, Locally Administered Addresses (LAA) are used for specific custom configurations and are not universally unique. Broadcast addresses, which are intended to send data to all devices on a local network, and multicast addresses, which send data to a group of devices, do not represent standard individual interface identifiers like MAC addresses do. Hence, the correct answer represents the typical format for MAC addresses as recognized in a standard networking context.