Which timing mode is most appropriate for an ONS 15454 that has lost its BITS－1 and optical references?() A.line timingB.loop timingC.internal timingD.through timingE.external timing
Which timing mode is most appropriate for an ONS 15454 that has lost its BITS－1 and optical references?()
A.line timing
B.loop timing
C.internal timing
D.through timing
E.external timing
相关考题：
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