GCP Professional Cloud Architect Practice Question

A financial-services company runs a real-time risk engine on Google Cloud and must stream 8 Gbps of data from its on-premises data center. The data center already has an MPLS edge router but no presence in a Google colocation facility, and the team cannot deploy new hardware. They need a private connection that delivers at least 10 Gbps aggregate bandwidth, offers a 99.9 % SLA per VLAN attachment, and can be provisioned in under two weeks. Which Google Cloud connectivity option best meets these requirements?

Configure HA VPN with two IPSec tunnels over different ISPs to Google Cloud.
Order two 5 Gbps VLAN attachments through Partner Interconnect in separate partner locations to create a redundant 10 Gbps private link.
Use Private Service Connect to expose internal Google Cloud endpoints to the on-premises network.
Provision a redundant 10 Gbps Dedicated Interconnect at a Google colocation facility and extend the data center network to that site.

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Answer Description

Partner Interconnect lets a customer obtain private connectivity to Google through a service provider without installing equipment in a colocation site. When two VLAN attachments are placed in independent Partner Interconnect locations, Google provides a 99.9 % SLA for each attachment. Two 5 Gbps attachments satisfy the 10 Gbps throughput goal and can usually be provisioned quickly by the partner. Dedicated Interconnect requires physical cross-connects in a colocation facility that the company does not have and commonly takes longer to provision, although it offers a higher (99.99 %) SLA. HA VPN travels over the public internet and provides no bandwidth guarantees, while Private Service Connect exposes specific services rather than general network connectivity. Therefore, redundant Partner Interconnect VLAN attachments are the most suitable choice.

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