Amanda wishes to enable users from other organizations to access her wireless network using their own organization's credentials. What technology would enable her to achieve this?

Federating RADIUS enables organizations to authorize users from their partner organizations to authenticate themselves against their own systems, and then be granted access to the local organization's network. One example of this is the eduroam federation, which is utilized by higher education institutions to allow students, faculty, and staff to access campus networks from any location where eduroam is available. Pre-shared keys are assigned by the organization in question and cannot be used to authenticate enterprise credentials from other organizations. OpenID is a web authentication protocol, while 802.11q is a trunking protocol.