Which two statements correctly describe the BGP ttl-security feature? (Choose two.)

A.
This feature protects the BGP processes from CPU utilization-based attacks from EBGP
neighbors which can be multiple hops away

B.
This feature prevents IBGP sessions with non-directly connected IBGP neighbors

C.
This feature will cause the EBGP updates from the router to be sent using a TTL of 1

D.
This feature needs to be configured on each participating BGP router

E.
This feature is used together with the ebgp-multihop command

Explanation:
http://packetlife.net/blog/2009/nov/23/understanding-bgp-ttl-security/