Setting Up Active/Passive Direct Connect Connection to AWS

Answer - D.

The AWS documentation mentions the following.

Active/Passive (failover)

One connection is handling traffic, and the other is on standby.

If the active connection becomes unavailable, all traffic is routed through the passive connection.

You will need to AS path prepend the routes on one of your links for it to be the passive link.

For more information on Active Passive Direct Connect , please refer to the below link:

https://aws.amazon.com/premiumsupport/knowledge-center/active-passive-direct-connect/

The correct answer is B. Use a Virtual private gateway.

Direct Connect is a network service provided by AWS that allows customers to establish a dedicated and private network connection between their data center or colocation facility and an AWS Direct Connect location. This dedicated connection can be used to access public and private AWS services.

To set up an Active/Passive Direct Connect connection, a Virtual private gateway is required. A Virtual private gateway is a software VPN device that is attached to a VPC and serves as a gateway between a customer's VPC and other networks.

When setting up an Active/Passive Direct Connect connection, a customer can set up two Virtual private gateways - one as an active gateway and the other as a passive gateway. The active gateway is the one that actively forwards traffic to the customer's on-premises network while the passive gateway serves as a standby device in case the active gateway fails.

In the event of a failure of the active Virtual private gateway, the passive Virtual private gateway can take over the traffic flow. This ensures that the Direct Connect connection remains available and the traffic is not interrupted.

Option A, Use VPC Peering, is not related to Direct Connect and is used to establish a private connection between two VPCs.

Option C, Use Route Propagation, is a feature that allows the automatic propagation of routes between a customer's on-premises network and a VPC, but it is not directly related to setting up an Active/Passive Direct Connect connection.

Option D, Use AS_PATH prepending, is a BGP technique that is used to influence the path selection process in BGP by adding one or more AS numbers to the AS_PATH attribute of BGP updates. While AS_PATH prepending can be used to influence the path selection in Direct Connect, it is not directly related to setting up an Active/Passive Direct Connect connection.