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單項選擇題

You are troubleshooting a problem with a cisco 7920 wireless ip phone that is causing the phone to drop calls. the problem appears to be roaming bandwidth issuE.  in order to verify what kind of issue it is, you decide to increase the bandwidth reserve for roaming on the wlan controller to maximum.
What level do you set the bandwidth to?()

A.5 percent
B.15 percent
C.25 percent
D.35 percent

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