What is the purpose of aaa server radius dynamic-author command?
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A. B. C. D.A.
The "aaa server radius dynamic-author" command is used to configure a switch or network device to dynamically authorize users and devices using the Remote Authentication Dial-In User Service (RADIUS) protocol. This command is typically used in environments where there are multiple RADIUS servers available, and the switch needs to be able to automatically select the appropriate server based on load, availability, or other factors.
The correct answer to the question is B: "Enables the switch to automatically authorize the connecting device if all the configured RADIUS servers are unavailable." This means that if all of the configured RADIUS servers are unavailable, the switch will automatically authorize the connecting device, rather than denying access.
Option A is not correct, as this command does not enable the device to dynamically receive updates from a policy server. Option C is also incorrect, as this command does not impair the ability to configure RADIUS local AAA. Option D is also incorrect, as this command does not disable dynamic authorization local server configuration mode.
In summary, the "aaa server radius dynamic-author" command enables a switch or network device to dynamically authorize users and devices using the RADIUS protocol, and if all of the configured RADIUS servers are unavailable, it allows the switch to automatically authorize the connecting device.