An enterprise customer has these requirements:
✑ end-to-end QoS for the business-critical applications and VoIP services based on CoS marking.
✑ flexibility to offer services such as IPv6 and multicast without any reliance on the service provider.
✑ support for full-mesh connectivity at Layer 2.
Which WAN connectivity option meets these requirements?
A . VPWS
B . MPLS VPN
C . DMVPN
D . VPLS
Answer: D