单项选择题
A.A firmware upgrade is in progress.
B.An access point buffer overflow is occurring.
C.The access point is booting.
D.The internal radio has failed.
单项选择题 Whichofthefollowingcommandsonthewirelessinterfaceofacisco3845integratedservicerouterallowsthessidtobroadcast？（）
单项选择题 Whichciscoaironetserieshasabuilt-indigitalthermometerdesignedtoprotecttheradio？（）
单项选择题 You review the failed attempts logs on an aaa server and find： "unknown network access server error." Which failure could produce this error？（）