An administrator implements a standalone controller that runs ArubaOS 8.x. Which feature should the administrator configure to optimize the RF operation for the company's WLAN?

An administrator at Campus A manages Aruba Mobility Controllers (MCs). The administrator defines a server group that includes a local ClearPass server and a remote Microsoft RADIUS server. The ClearPass server has the credentials for users at Campus A and the Microsoft RADIUS server has the credentials for users at Campus B.
Users at CampusA successfully authenticate and connect to the Campus A wireless network.
However, when users from Campus B visit Campus A they fail authentication.
What can the administrator do to solve this problem?

Refer to the exhibit.

A user uses a wireless client for a wireless session. Based on the output shown in the exhibit for the selected Aruba AP, what is the possible problem with this user's wireless session?

An administrator supports a RAP to abranch office. Employees at the branch office connect to an employee SSID that allows for split tunneling of the employee traffic. The RAP initially connects to the corporate office controller, but later loses connectivity to it.
Which operating mode should the administrator configure for a secondary SSID to be advertised during the loss of connectivity?

Anadministrator has multiple AAA servers, some Microsoft RADIUS and some ClearPass. When 802.1X users authenticate, the administrator wants to ensure that the authentication requests are handled by the appropriate AAA server. Users enter their username in this format: username@domain_name.
What must the administrator implement to ensure the correct AAA server processes the authentication request?