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Answer: • Build one VLAN attachment from each Dedicated Interconnect corresponding to the Cloud Router in that region. • Enable global routing at the VPC layer.
To maximize high availability diversity, each Dedicated Interconnect (in us-east1 and us-west1) should have one VLAN attachment in its respective region. Enabling global routing at the VPC layer ensures that routes from both regions are propagated globally, allowing traffic to failover between regions if one Interconnect becomes unavailable. Regional routing (Option B) limits routes to their respective regions, reducing redundancy. Options C and D are invalid because a VLAN attachment cannot span multiple regions; each Interconnect's VLAN attachments must reside in the same region as the Interconnect itself.
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Your company is transitioning to a hybrid cloud setup and requires connectivity between two on-premises data centers and Google Cloud. Since there is no SLA on the Dedicated Interconnect ports, you have established one Dedicated Interconnect in us-east1 and another in us-west1, each linked to an on-premises data center. A Cloud Router has been configured for each Dedicated Interconnect in its respective region. To maximize high availability and diversity with this design, how should you configure the Interconnect attachments?
A
• Build one VLAN attachment from each Dedicated Interconnect corresponding to the Cloud Router in that region. • Enable global routing at the VPC layer.
B
• Build one VLAN attachment from each Dedicated Interconnect corresponding to the Cloud Router in that region. • Enable regional routing at the VPC layer.
C
• Build two VLAN attachments from each Dedicated Interconnect: one connecting to the Cloud Router in us-east1, and one connecting to the Cloud Router in us-west1. • Enable regional routing at the VPC layer.
D
• Build two VLAN attachments from each Dedicated Interconnect: one connecting to the Cloud Router in us-east1, and one connecting to the Cloud Router in us-west1. • Enable global routing at the VPC layer.