A.Perform an incremental implementation of components.
B.Following the PPDIOO model， implement the entire solution and then test end-to-end to make sure that it is performing as designed.
C.Implement trunking of all VLANs to ensure that traffic is crossing the network as needed before performing any pruning of VLANs.
D.Test the solution on a segmented portion of a lab network prior to rolling out across the entire network.

A.generic router and switch configuration parameters
B.end-to-end test plan after all components have been installed and  configured
C.administrator assignments
D.rollback plan