Question 1 of 30
A network administrator is managing a FortiGate firewall acting as a wireless controller for a corporate environment. The wireless network is configured to use a central RADIUS server for WPA2-Enterprise authentication. During a scheduled maintenance window for the RADIUS server, wireless clients begin to report authentication failures. The administrator has confirmed that the RADIUS server is indeed offline for maintenance. Which of the following proactive measures, when implemented prior to such an event, would best ensure continued wireless network access for essential personnel during the RADIUS server\'s unavailability, reflecting strong problem-solving and adaptability?
Configure a local RADIUS server on a separate FortiGate unit to serve as a high-availability backup.
Implement a guest network with an open SSID that requires no authentication for immediate access.
Establish a fallback authentication method on the primary FortiGate, utilizing local user accounts for critical staff.
Temporarily disable WPA2-Enterprise security on the existing wireless network until the primary RADIUS server is restored.

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