Which configuration method is commonly used before the AP begins its discovery process?

The method commonly used before an access point (AP) begins its discovery process is during AP provisioning. This process is crucial as it prepares the AP to connect to the network by providing it with necessary configurations. During provisioning, the AP may receive its initial settings, such as management IP address information, which can include static IP, DHCP configurations, or other network parameters. This step is essential for the AP to effectively communicate with the controller and to begin its discovery of network resources.

Provisioning can involve a variety of processes and settings, ensuring that the AP is configured to recognize the right network and has the proper credentials to connect. This is different from other methods listed in the choices, which either relate to post-setup procedures or specific configurations that typically occur after the discovery process has initiated. For example, static assignment is typically used for network devices that require a fixed IP after the AP has already completed the discovery phase, while VLAN tagging is relevant to the network configuration and segmentation, and firmware configuration refers to updates or changes made once an AP is operational.