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Whatisthedifferencebetween1＋1and1:1protectionswitching?()
A.1+1isbasedonAPS，while1：1isbasedonIPS.
B.1：1isusedinSNCPswitching，while1+1isusedinMS-SPRingswitching.
C.1+1sendssignalsonWorkingandProtectpaths，while1：1sendssignalsonlyonWorkingpath.
D.1+1sendssignalsonWorkingpathONLY，while1：1sendssignalsonbothWorkingandProtectpaths.
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更多 “ Whatisthedifferencebetween1＋1and1:1protectionswitching?() A.1+1isbasedonAPS，while1：1isbasedonIPS.B.1：1isusedinSNCPswitching，while1+1isusedinMS-SPRingswitching.C.1+1sendssignalsonWorkingandProtectpaths，while1：1sendssignalsonlyonWorkingpath.D.1+1sendssignalsonWorkingpathONLY，while1：1sendssignalsonbothWorkingandProtectpaths. ” 相关考题
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