Your company currently has VPCs located in us-west and us-east. The company has an AWS Direct Connect connection in the US East region. They want to have the ability to extend the connection to the us-west. They also need to minimize time and effort to have this in place. What two things you need here to satisfy the above requirement?

Answer options:

A.Create another AWS Direct Connect connection in us-west.
B.Make use of the Direct Connect gateway.
C.Create a private VIF using the current connection.
D.Make use of an IPSec VPN.

Answer – B and C
The AWS Documentation mentions the following.
You can use an AWS Direct Connect gateway to connect your AWS Direct Connect connection over a private virtual interface to one or more VPCs in your account that are located in the same or different regions. You associate a Direct Connect gateway with the virtual private gateway for the VPC and then create a private virtual interface for your AWS Direct Connect connection to the Direct Connect gateway. You can attach multiple private virtual interfaces to your Direct Connect gateway.
The below diagram from the AWS Documentation shows how this can be achieved.
Option A is incorrect since creating another connection would be an overhead.
Option C is CORRECT since we also need a Private Virtual Interface, as shown in the above diagram.
Option D is incorrect since there is no mention of encryption required.
For more information on the Direct Connect gateway, one can visit the below URL
https://docs.aws.amazon.com/directconnect/latest/UserGuide/direct-connect-gateways.html