Whataretwoimportantconsiderationswhenusing2－or4－channel15216OADMs?()A.All"Add"channelsrequireuniformpowerlevels.B.TheflexibilityofwavelengthsperOADMislimited.C.Itiseasiertobalance"Pass-Through"and"Add"channels.D.Thereislowerpass-throughlossusingmulti-chan
题目
Whataretwoimportantconsiderationswhenusing2－or4－channel15216OADMs?()
A.All"Add"channelsrequireuniformpowerlevels.
B.TheflexibilityofwavelengthsperOADMislimited.
C.Itiseasiertobalance"Pass-Through"and"Add"channels.
D.Thereislowerpass-throughlossusingmulti-channelOADMs.
E.Youcanextractasinglechannelwithoutdroppingotherchannels.
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参考答案和解析
参考答案：A, B