Which of the following statements is true about a router’s eBGP peers that is not also true
about that same router’s iBGP peers?

A.
The eBGP peer neighborship uses TCP.

B.
The eBGP peer uses port 180 (default).

C.
The eBGP peer uses the same ASN as the local router.

D.
The eBGP peer updates its AS_Path PA before sending updates to this router.

Explanation:
The question asks which answers are true about the eBGP peer but also not true about an
iBGP peer. Both iBGP and eBGP use TCP port 179. An eBGP peer uses a different ASN
than the local router, by definition, making that answer incorrect. The correct answer refers
to the fact that an eBGP peer adds its own ASN to the BGP AS_Path PA before sending
routing information to another router, whereas iBGP peers do not.