Which CLI mode must be used to configure the BGP keychain in Cisco IOS XR software?

Refer to the exhibit.

Which configuration must be implemented on router R8 so that it will establish OSPF adjacency with R5?
A)

B)

C)

D)

A network operator needs to implement PIM-SSM multicast configuration on customer's network so that users in different domains are able to access and stream live traffic. Which two actions must the engineer perform on the network to make the streaming work? (Choose two.)

What is the characteristic of the Tl-LFA?

An engineer is implementing IGMP with SSM on a multicampus network that supports video streaming. Which task must the engineer perform as part of the process?