An enterprise customer will deploy a centralized unified communications application to provide voice, video, and instant messaging to their branch offices. Some of the branch offices are located in remote locations and are connected via a 1.5 Mb/s Layer 3 VPN connection. Which two actions are the most cost-effective ways to ensure that this new application is implemented properly? (Choose two.)

Which mechanism enables small, unmanaged switches to plug into ports of access switches without risking switch loops?

What are two benefits of using BFD for failure detection in the design of a network?
(Choose two.)

Drag and drop the multicast protocols from the left onto the current design situation on the right.

While reviewing an existing network design, you are discussing the characteristics of different STP versions. Which protocol minimizes unicast flooding during TCN in a Layer 2 switched network with many VLANs?