单项选择题
A.back up the database， stop the wcs， upgrade the wcs， restore the database， start the wcs
B.stop the wcs， back up the database， upgrade the wcs， restore the database， start the wcs
C.back up the database， stop the wcs， upgrade the wcs， start the wcs， restore the database
D.stop the wcs， back up the database， upgrade the wcs， start the wcs， restore the database
单项选择题 When optimizing a standalone point-to-multipoint bridge installation with eight non-root bridges. Which of the following rts threshold and cwmin settings would be correct for the non-root bridges？（）
单项选择题 Whichcommandwillenabledhcpdebuggingonawlancontroller？（）
单项选择题 You are troubleshooting a one-way call problem with a cisco 7920 wireless ip phone on a standalone wlan. What may cause this problem？（）