Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)

advertise-best-external is a BGP feature used for advertising non-best external routes to iBGP peers when bestpath-external is configured, which is unrelated to the eBGP same-AS scenario.

bestpath as-path ignore modifies the BGP bestpath selection algorithm by not considering AS-path length, but it does not override the fundamental BGP loop prevention rule of discarding routes that contain the local AS in the path.

client-to-client reflection is a Route Reflector feature used in iBGP to reduce the need for a full mesh, and it is not applicable to issues between eBGP neighbors.

The as-override feature replaces the local router's AS number with the neighbor's AS number in the AS-path attribute when sending a BGP update, effectively bypassing the loop prevention mechanism that would normally discard routes containing the local AS.

The allow-as-in feature permits a BGP router to accept routes that contain its own AS number in the AS-path, which is essential for eBGP neighbors with the same AS to successfully receive route advertisements without them being dropped due to loop prevention.