Refer to the exhibit. A network engineer is configuring a new router for iBGP to improve the capacity of a growing network. The router must establish an iBGP peer relationship with its neighbor. The underlay network is already configured with the correct IP addresses. Which step should the engineer apply to complete this task?
To complete the iBGP configuration on the router, the network engineer needs to activate the BGP peer sessions under the correct address family. The current configuration shows 'no bgp default ipv4-unicast', which means that the default IPv4 unicast address family is not activated for the neighbors. Therefore, the next step is to explicitly activate the BGP neighbors within the appropriate address family to establish the iBGP sessions.
i go for D. You need to activate the bgp neighbors sessions!
if you see no bgp default ipv4-unicast, then you will need neighbor x.x.x.x activate under address-family
99% for C and 1% for D; the goal of this task is to install new router to support a growing network, this indicate this will be a route reflector. 1% for D since it's correct as well and needed any way for this task.
You don't necessarily need a route reflector as long if you have an iBGP full mesh.
D for sure
https://community.cisco.com/t5/switching/neighbor-activate-bgp/td-p/2445181