AWS Certified Advanced Networking Specialty Practice Exam

When using AWS Direct Connect, which additional step is necessary to connect multiple VPCs in different regions?

1. Configure a Direct Connect gateway

2. Create a VPN tunnel

3. Use multicast routing

4. Create an Elastic Load Balancer

The correct answer is: Configure a Direct Connect gateway

To connect multiple VPCs in different regions using AWS Direct Connect, the necessary step is to configure a Direct Connect gateway. A Direct Connect gateway allows for the establishment of a private connectivity between your on-premises environments and multiple VPCs across different AWS regions. This capability is essential because it bypasses the need to have separate Direct Connect connections in each region, leveraging one connection to access multiple VPCs. The Direct Connect gateway acts as a virtual router and simplifies the network architecture by enabling private connectivity to VPCs that may not be in the same region as the Direct Connect connection. This setup is critical for organizations that need to connect geographically dispersed workloads efficiently and securely. In contrast, creating a VPN tunnel is typically used for secure remote connectivity to your resources rather than for interconnecting multiple VPCs through Direct Connect. Multicast routing is not a feature supported by VPCs in AWS, as VPCs operate in a unicast environment. Creating an Elastic Load Balancer is unrelated to the connectivity between VPCs or Direct Connect, as Elastic Load Balancers are primarily used to distribute incoming application traffic across multiple targets, like EC2 instances, within the same VPC or across VPCs using different methods, but they do