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A.大容量、低时延、高精度时间同步的PT
B.IPRAN和OTN都要求新平台，新设备
C.新增L3功能
D.FlexE、SR.SDN等新功能也需求硬件升级
E.新芯片满足低时延和高精度时间同步需求
答案
更多“升级PTN/IP RAN over OTN方案包括（）。”相关的问题
第2题
A.jumped
B.disappearing
C.into
D.wogds
第7题
Which of the following statements is correct？
A.Once purchased, currency futures have a range of close-out dates
B.Currency swaps can be used to hedge exchange rate risk over longer periods than the forward market
C.Banks will allow forward exchange contracts to lapse if they are not used by a company
D.Currency options are paid for when they are exercised
