单项选择题
Whichdefinitionbestdescribesthestafftrainingservicecomponentwithinthewirelessimplementphase?()
A.developsatrainingplananddeliversviaacustomworkshopore-learning
B.helpsimprovetheperformanceandfunctionalityoftheinfrastructureoperationsandnetworkmanagementsystem
C.reducestheriskofdowntimecausedbyfacilities-relatedproblems
D.providesastep-by-stepplandetailingtheinstallationandservice-commissionrequirementtaskstobestagedinacontrolledimplementationenvironmentthatemulatesacustomernetwork