YouhaveveryfewCisco7920wirelessIPphonesonyournetwork，butlotsofwirelesslaptops.Youwanttoincreasethebandwidthavailableforthelaptopsbydecreasingthebandwidthreservedforthe Cisco7920phones.Whatisthelowestpercentageofvoice-allocatedbandwidthyoucanselectonthe WL
题目
YouhaveveryfewCisco7920wirelessIPphonesonyournetwork，butlotsofwirelesslaptops.Youwanttoincreasethebandwidthavailableforthelaptopsbydecreasingthebandwidthreservedforthe Cisco7920phones.Whatisthelowestpercentageofvoice-allocatedbandwidthyoucanselectonthe WLANcontroller？（）
A.55percent
B.75percent
C.40percent
D.25percent