In this scenario, the correct configuration would be to set up both Data VLAN and Voice VLAN on the switch. The Voice VLAN is specifically designed for VoIP traffic, allowing it to be separated from regular data traffic and to receive appropriate Quality of Service (QoS) prioritization. This separation not only secures the VoIP traffic from the rest of the network but also ensures that voice packets are given priority, which is important in maintaining call quality. Port mirroring is used for monitoring and troubleshooting, while PoE enables power to be delivered to devices through the network cables but doesn't address traffic segregation or prioritization. Port security limits the number of MAC addresses or specific devices allowed on the port, ensuring network security but not specifically catering to VoIP traffic needs.