To get started using AWS Direct Connect, in which of the following steps do you configure Border
Gateway Protocol (BGP)?

A.
Complete the Cross Connect

B.
Configure Redundant Connections with AWS Direct Connect

C.
Create a Virtual Interface

D.
Download Router Configuration

Explanation:
In AWS Direct Connect, your network must support Border Gateway Protocol (BGP) and BGP
MD5 authentication, and you need to provide a private Autonomous System Number (ASN) for
that to connect to Amazon Virtual Private Cloud (VPC). To connect to public AWS products such
as Amazon EC2 and Amazon S3, you will also need to provide a public ASN that you own
(preferred) or a private ASN. You have to configure BGP in the Create a Virtual Interface step.
http://docs.aws.amazon.com/directconnect/latest/UserGuide/getstarted.html#createvirtualinterfac
e