In a controller-based city WLAN using 802.11r, what conceptual roles do FT key holders play?
Select an answer to reveal the explanation.
Short Explanation
R0KH and R1KH are the trusted key cashiers in the FT hierarchy—holding and handing the right key material so roamers stay secure and fast. They are not portal-cookie jars or open-VLAN switches. Pairwise keys still matter; these roles help derive and move FT state.
Full Explanation
In 802.11r architectures, the R0 key holder and R1 key holders manage levels of the FT key hierarchy so PMK-R0/R1 material can support rapid secure transitions, often centralized on controllers in enterprise WLANs. Their role is key distribution for FT, not eliminating PTK use or opening VLANs. Guest portal state is unrelated to FT key-holder function.