The CTO of a company requires the support of a network consultant to deliver an MPLS solution without resigning to a certain degree of redundancy and scalability. Which solution effectively scales to hundreds or thousands of sites?
A. L2VPN with the broadcast traffic processed at the ingress PE.
B. L3VPN with direct LSP connectivity between all PEs.
C. L2VPN by encapsulating multiple frame formats with interworking.
D. L3VPN using a hierarchical topology of N-PEs and U-PEs.
correct answer is B