Question

Your company has provisioned a 10 Gbps Dedicated Interconnect connection terminating at a colocation facility. Your production VPC has resources in the us-central1 region, and you need to create a VLAN attachment so that on-premises traffic can reach those resources. When you create the VLAN attachment, the Cloud Router it associates with must be in a specific region. To minimize latency and egress cost for traffic between on-premises and your us-central1 workloads, in which region should you create the VLAN attachment and its Cloud Router?

Accepted Answer

In us-central1, the same region as the workloads being reached over the attachment

Answer

In whichever region is geographically closest to the physical colocation facility, regardless of workload location

Answer

In a global scope, since VLAN attachments are not tied to any region

Answer

In us-east1, to provide a regional separation between the interconnect and the workloads for resilience