Drag and drop the message types from the left onto the target field of the message originator on the right.

Refer to the exhibit:
After implementing a new design for the network, a technician reviews the pictured CLI output as part of the MOP.
Which two statements describe what the technician can ascertain from the ImpNull output? (Choose two.)
Refer to the exhibit:
Which configuration prevents the OSPF neighbor from establishing?
Refer to the exhibit. Four midsize service providers provide access to different customers that use Layer 3 VPN services to enable communication across geographic regions. The service providers are connected as shown in the exhibit, and the PEs have established eBGP relationships. PE4 has an IBGP relationship with PE5. The routes that PE4 learns from PE5 must reach the other PE routers, but they are absent from the routing tables on the other PES. Which action should the engineers take to correct the problem?
A network engineer must enable multicast on the network to support a new series of webcasts. The PIM protocol has been enabled on the LAN side, with PIM and MSDP capabilities on edge router R1. The multicast source has been configured with IP address FF3A:121, and IP protocol 58 has been enabled and successfully tested in the network. Due to the limitations of some devices on the network, the data flow should take the most efficient path.
Which task must the engineer perform to achieve the goal?