City WLAN must stay available if one RADIUS server fails, but must not admit users without authentication. Which AAA design best fits?
Select an answer to reveal the explanation.
Short Explanation
Two RADIUS boxes keep Wi-Fi usable; fail-open to “anyone gets in” keeps attackers usable. Redundancy without fail-open is the civic HA pattern. One lonely server or a global PSK is not Enterprise HA.
Full Explanation
High availability for enterprise WLAN AAA typically uses a redundant RADIUS pair so authentication continues during a node failure, while avoiding fail-open designs that grant unrestricted access when AAA is unreachable. Silent single-server fragility, open-SSID failover, or substituting a global PSK undermines secure availability for municipal WLANs.