A.Alignment

B.Overhead insertion

C.Mapping

D.Multiplexing

A.4

B.1

C.5

D.9

A.Improper DCM configuration will lead to degradation of receiving end performance.

B.DCM modules are more likely to cause nonlinearity than line transmission fibers, so the optical power entering the fiber must be strictly controlled.

C.Improper DCM configuration will cause the system signal-to-noise ratio to deteriorate.

D.For 10G systems with line fiber lengths of less than 400 km, G.652 DCM can be used to compensate

E.655 (LEAF).

A.10 minutes

B.15 minutes

C.6 min

D.12 min