Question

Difficulty: EasyDesigning Infrastructure for Technical Requirements and High Availability

An enterprise is designing a high-availability infrastructure on Google Cloud to support a mission-critical internal batch analytics pipeline. The workload operates within a single GCP region, requires compute resilience against zonal failures, and requires a dedicated hybrid connection to on-premises systems capable of sustaining continuous traffic exceeding 10 Gbps10\text{ Gbps}. Which of the following architectural design choices should the cloud architect implement to meet these technical availability and connectivity requirements? (Select TWO answers.)

  1. Deploy the application instances across a Regional Managed Instance Group (MIG) distributed across multiple zones with auto-healing and load balancer health checks enabled.Answer
  2. Establish Dedicated Interconnect with redundant physical connections between the on-premises data center and Google's network edge.Answer
  3. C
    Configure an HA VPN gateway with a single IPsec tunnel to handle the hybrid connection throughput requirements exceeding 10 Gbps10\text{ Gbps}.
  4. D
    Deploy a multi-region Cloud Spanner instance to store transient operational batch logs for the single-region analytics pipeline.
  5. E
    Configure load balancer health checks to query backend database endpoints directly to verify overall system availability.

Answer

The correct architecture uses a Regional Managed Instance Group across multiple zones combined with Dedicated Interconnect for high-throughput hybrid connectivity.
Deploying a Regional Managed Instance Group ensures compute instances are provisioned across multiple availability zones within the region, providing resilience against single-zone failures. For network connectivity exceeding 10 Gbps, Dedicated Interconnect provides enterprise-grade, high-bandwidth circuits to meet high-throughput requirements.

Step-by-Step Solution

1
Evaluate compute high availability requirements
Regional Managed Instance Groups (MIGs) spread virtual machine instances evenly across multiple zones within a single region, providing zonal redundancy and auto-healing capabilities.
Zonal outages will not crash the workload if instances are distributed regionally.
2
Evaluate hybrid network connectivity requirements for throughput > 10 Gbps
Dedicated Interconnect provides 10 Gbps or 100 Gbps circuits extending on-premises networks to Google Cloud.
Cloud VPN tunnels max out at 3 Gbps per tunnel, which cannot meet a 10 Gbps single-tunnel throughput requirement.

Key Concept

High-Availability Compute and High-Throughput Hybrid Connectivity
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