How to Connect On-Premises to GCP with Low Latency and Redundancy?
Your company has a single on-premises data center that needs to be connected to a VPC in Google Cloud. The total bandwidth requirement is 10Gbps. The connection must be redundant and have a minimum SLA of 99.9%. Due to the sensitive nature of the workloads, you need to implement the solution with the lowest latency. What should you do?
Community Votes
100% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
Tests mapping explicit performance metrics to the correct connectivity product, with the common trap being the preference for cheaper or simpler alternatives like Partner Interconnect or HA VPN.
This question evaluates the selection of Google Cloud network interconnects for high-performance hybrid architectures. The community consensus confirms that Dual Dedicated Interconnects are the only solution meeting strict 10Gbps bandwidth, redundancy, and lowest-latency requirements.
Option A (Partner Interconnect) is frequently selected due to its lower provisioning overhead, but it introduces higher latency and reduced control because traffic traverses a third-party service provider backbone.
Community Discussion (4 comments)
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Expert Analysis
Why the Answer Is Correct
Deploying two Dedicated Interconnect circuits across separate edge availability domains in the same metro directly satisfies the 10Gbps bandwidth, redundancy, and 99.9% SLA requirements. Private fiber eliminates public internet congestion and routing hops, which guarantees the absolute lowest latency for sensitive workloads. Google Cloud natively supports this dual-circuit architecture to ensure hardware-level fault tolerance without compromising performance.Why the Other Options Are Wrong
Partner Interconnect routes traffic through a third-party carrier backbone, adding unnecessary latency and reducing administrative control, which violates the strict performance criteria. HA VPN options traverse the public internet, making them susceptible to jitter, packet loss, and unpredictable latency regardless of how tunnels are terminated. Additionally, terminating both VPN tunnels on a single public IP creates a critical single point of failure, directly contradicting the mandatory redundancy requirement.Community Comment Notes
Examinees universally agreed that Dedicated Interconnect is the only viable choice when deterministic latency and high throughput are explicitly required [Comment 1]. Multiple candidates pointed out that Partner Interconnect introduces dependency on external carriers, which compromises both speed and administrative control [Comment 2]. Several users referenced official Google documentation detailing the specific edge availability domain distribution needed to achieve the mandated 99.9% uptime target [Comment 3].Official Reference
Exam Strategy
Always map explicit performance metrics like "lowest latency" and "guaranteed throughput" directly to Dedicated Interconnect before considering VPN or Partner options. When redundancy and SLA thresholds are specified, look for architectural patterns that distribute connections across distinct physical infrastructure zones rather than relying on logical failover alone.
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