Which statement is true about IBGP routers?

A.
They must be fully meshed.

B.
They can be in a different AS.

C.
They do not need to be directly connected.

D.
They must be directly connected.

Explanation:
When two routers establish a TCP enabled BGP connection, they are called neighbors or
peers. Each router running BGP is called a BGP speaker. Peer routers exchange multiple
messages to open and confirm the connection parameters, such as the version of BGP to be
used. If there are any disagreements between the peers, notification errors are sent and the
connection fails. To be a neighbor of BGP no need to be directly connected.