On a cisco 1000 series controller-based access point,the alarm led is flashing red,but the other leds are off.<br /> What is this access point indicating?()<p> On a cisco 1000 series controller-based access point,the alarm led is flashing red,but the other leds are off.<br /> What is this access point indicating?()</p>
A、A.its ip address already exists.
B、B.it is operating normally.
C、C.it requires a code upgrade.
D、D.it has lost contact with the controller.