单项选择题
A. This out-of-band approach supports scaling
B. SLB· is not inline.
C. Mode is not as common as bridge or routed mode.
D. Return traffic requires PB·R， server default gateway pointing to SLB·， or client source NAT·
单项选择题 Asanexperiencedtechnician，youareresponsibleforTechnicalSupport.Acustomercallstoaskthebestsignallevelandnoiselevelforcellphone.Howtorespond？（）
单项选择题 Acompanyisusingamulti-sitecentralizedcallprocessingmodel.WhichfeatureensuresthattheremotesiteIPphoneswillstillhavelimitedfunctionalitygivenaWANoutage？（）
单项选择题 OneofyourcustomersisusingtheG.711codecwith802.11aaccesspointradios.This cansupportamaximumofhowmanyphonesperaccesspoint？（）