Routers PG1 and PG2 are configured as BGP peers. Which of the following is true regarding
this peering relationship? (Select two)

A.
Periodic keepalives are used to verify connectivity.

B.
Incremental keepalives are used to verify connectivity.

C.
TCP provides a reliable connection between two BGP routers.

D.
It provides a “best effort” connection between two BGP routers.