Exhibit:

What is the proper BGP configuration on Certkiller 3 to have Certkiller 3 announce the 172.0.0.0/8 prefix from Certkiller 4 to Certkiller 2 via BGP with a next hop of 10.1.1.1?

A.
router bgp 65102
neighbor 10.2.2.1 remote-as 65103
neighbor 10.1.1.2 remote-as 65102

B.
router bgp 65102
neighbor 10.2.2.1 remote-as 65103
neighbor 10.1.1.2 remote-as 65102
neighbor 10.2.2.1 next-hop-self

C.
router bgp 65102
neighbor 10.2.2.1 remote-as 65103
neighbor 10.1.1.2 remote-as 65102
neighbor 10.1.1.2 next-hop-self

D.
router bgp 65102
neighbor 10.2.2.1 remote-as 65103
neighbor 10.1.1.2 remote-as 65102
neighbor 10.1.1.2 update-source-self

Explanation:
Causes next-hop to be outgoing interface to neighbor 10.1.1.2

Wrong Answer
1. A is missing Next-hop-self command
2. B This is not done at the EBGP level
3. D update-source-self invalid parameter update-source address is the proper neighbor parameter