单项选择题
A.25 percent
B.40 percent
C.55 percent
D.75 percent
单项选择题 Bydefault，ontheWLANcontrollerforavoiceapplicationusingCisco7921wirelessIPphones，whatisthepercentageofRFbandwidththatcanbededicatedtothephones？（）
单项选择题 OnaWLANcontroller，whatisthedefaultroamingbandwidthpercentagereservedforvoice clients？（）
多项选择题 When configuring a WLAN controller for a voice application using Cisco 7920 wireless IP phones. Which two general control settings should you select？ （）