Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?

An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?

Which PIM mode uses a shared tree only?

Which common issue causes intermittent DMVPN tunnel flaps?

Which QoS feature responds to network congestion by dropping lower priority packets?