正解:C
The correct configuration for the scenario described would involve setting up VPN-A to send traffic to VPN-B and receive from VPN-C, and VPN-B to send to VPN-C and receive from VPN-A. This can be achieved through proper routing and forwarding configurations using technologies such as MPLS L3VPNs, which allow for the segregation of different VPN traffic over a shared network infrastructure. The configuration would ensure that the correct paths are established for traffic flow between the VPNs as specified. References := The Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) course provides a deep dive into Service Provider technologies including core architecture, services, networking, automation, quality of services, security, and network assurance. It covers topics such as MPLS VPNs, which are relevant to the question1