多项选择题
Which three are advantages of SONET？（）
A.Allows the transportation of all forms of traffic B.Multiplexing is easy C.Clocks do not need to be synchronized D.Reduces network complexity and cost E.Padding is not necessary and not permitted
单项选择题 WhichstatementabouttheuseofRouteTargetRewriteistrue？（）
单项选择题 WhatistheBGPsynchronizationrule？（）
多项选择题 Whichtwostatementsabout10GigabitEthernet（10GE）aretrue？（）
