GCP Professional Cloud Architect Practice Question
Your company operates two production VPC networks that belong to separate Google Cloud organizations and a latency-sensitive analytics cluster in AWS us-east-1. You must enable private RFC 1918 connectivity among all three environments, guarantee at least 10 Gbps of throughput toward AWS, exchange routes dynamically, minimize day-to-day operational effort, and keep Google Cloud egress charges low. Which solution best meets these requirements?
Order Partner Interconnect attachments for each VPC through a service provider that also offers Layer-2 links to AWS, then rely on Cloud NAT for inter-VPC and AWS traffic.
Deploy Cross-Cloud Interconnect in a shared colocation site, attach each VPC through its own VLAN and Cloud Router, and use VPC Network Peering between the two Google Cloud VPCs.
Connect both VPCs to an on-premises hub with Dedicated Interconnect, connect the hub to AWS with Direct Connect, and use Shared VPC to expose subnets across projects.
Create two HA VPN tunnels from each Google Cloud VPC directly to AWS and peer the VPCs with VPC Network Peering.
Cross-Cloud Interconnect offers 10 Gbps and 100 Gbps dedicated links from a Google-managed port in a colocation facility directly into another cloud provider's network. When each VPC attaches to the Interconnect with its own VLAN attachment and Cloud Router, the routes for both VPCs are exchanged with AWS dynamically via BGP, providing private connectivity and reduced egress pricing compared with internet-based VPN. VPC Network Peering then supplies private, low-latency connectivity between the two Google Cloud VPCs without additional bandwidth fees. VPN tunnels cannot reach 10 Gbps per connection, Partner Interconnect is designed for on-premises rather than cloud-to-cloud links, and backhauling traffic through an on-premises hub with Dedicated Interconnect adds complexity, extra hops, and higher egress costs.
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What is VPC Network Peering and why is it used in this solution?
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How does BGP work for dynamic route exchanges in this solution?
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What is Cross-Cloud Interconnect?
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How does VPC Network Peering work?
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What is BGP and how is it used in this scenario?
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GCP Professional Cloud Architect
Managing and provisioning a solution infrastructure
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