BGP between R1 and R2 uses peer‑group CORP with MD5 authentication. R1 logs an invalid MD5 digest from 10.10.10.1 to 10.120.10.1. Which two neighbor configurations will establish the BGP session? (Choose two.)

The log message "invalid MD5 digest from 10.10.10.1 to 10.120.10.1" indicates that the BGP session between R1 (10.10.10.1) and R2 (10.120.10.1) is failing due to a password mismatch. Both routers must be configured with the same MD5 password for the BGP session to establish. The neighbor CORP password Cisco command applies the password "Cisco" to the peer-group named "CORP". The correct options show the proper configuration on both R1 and R2. On R1, the neighbor is 10.10.10.1 (its own IP in the BGP session context, though the question implies 10.10.10.1 is R1's interface IP and 10.120.10.1 is R2's). On R2, the neighbor is 10.120.10.1. Both use the peer-group CORP and neighbor CORP password Cisco to set the authentication. The incorrect options either use the wrong IP address for the neighbor on a given router or apply the password to an incorrect peer-group name (e.g., PEER instead of CORP).