单项选择题
A.rts threshold=4000，cwmin=3
B.rts threshold=1，cwmin=4
C.rts threshold=4000，cwmin=5
D.rts threshold=1，cwmin=5
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？（）
单项选择题 Whatisthemaximumnumberofwirelesscontrollersthatthehighest-endciscowcsservercanmanage？（）