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To reduce network usage and minimize leave latency for users connected to VLAN 76, the configurations should focus on efficient multicast traffic management. Option A likely involves enabling IPv6 MLD snooping, which restricts multicast traffic to only the ports that have members interested in receiving the traffic, thus reducing unnecessary network usage. Option C might include configuring fast-leave processing, which allows the switch to immediately stop forwarding multicast traffic to a port when the last member of a multicast group leaves, reducing leave latency.

References := Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR)

 In Cisco Service Provider Network Core Technologies, an EVPN instance can be likened to a VRF (Virtual Routing and Forwarding). A VRF allows multiple instances of a routing table to co-exist within the same router at the same time. Similarly, EVPN provides separation between routing instances which aligns with how VRF operates.

To avoid advertising the same routes back to their sources when using RIP as the routing protocol between multiple PEs and CEs, the network engineer should define VRFs (Virtual Routing and Forwarding) on each device. VRFs allow for traffic separation by creating separate routing tables for different VPNs or customers. By using VRFs, each CE-PE link can be associated with a specific VRF, ensuring that routes are not inadvertently advertised back to their sources. Other options (A, B, and D) are not directly related to this specific requirement. References: Implementing and Operating Cisco Service Provider Network Core Technologies source documents or study guide.

In the context of Cisco’s Implementing and Operating Service Provider Network Core Technologies, the UCS Series is typically where OpenStack components would be hosted. OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a data center, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface.

References: Cisco SPCOR training materials and documentation provide detailed information on the implementation and operation of service provider technologies, including the hosting of OpenStack components on the UCS Series.