Hello,
According to CCNP route exam blue print:
3.30 Describe, configure, and verify BGP peer relationships and authentication
3.30.a Peer group
3.30.b Active, passive
3.30.c States and timers
3.31 Configure and verify eBGP (IPv4 and IPv6 address families)
3.31.a eBGP
3.31.b 4-byte AS number
3.31.c Private AS
3.32 Explain BGP attributes and best-path selection
I think the BGP authentication is not mentioned on Rene Course …