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Question

Difficulty: EasyDesigning Network Architecture and Hybrid Connectivity

A healthcare startup needs to establish a secure, encrypted connection between its local office and a Google Cloud VPC network for database backup transfers requiring less than 1.5 Gbps of bandwidth. Which Google Cloud hybrid connectivity service should the cloud architect recommend to meet these requirements at the lowest cost and complexity?

  1. HA VPNAnswer
  2. B
    Dedicated Interconnect
  3. C
    VPC Network Peering
  4. D
    Carrier Peering

Answer

HA VPN is the optimal choice as it provides encrypted, SLA-backed hybrid connectivity over the public internet for workloads requiring less than 3 Gbps per tunnel.
HA VPN provides high-availability IPsec VPN connections that support up to 3 Gbps of encrypted bandwidth per tunnel over public internet connections, making it the most cost-effective and low-complexity solution for sub-1.5 Gbps bandwidth requirements.

Step-by-Step Solution

1
Analyze bandwidth and security requirements
The requirement calls for an encrypted connection with throughput under 1.5 Gbps.
Bandwidth thresholds determine whether Cloud VPN (up to 3 Gbps per tunnel) or Cloud Interconnect (10/100 Gbps or Partner 50 Mbps - 10 Gbps) is necessary.
2
Evaluate hybrid connectivity options against cost and complexity
HA VPN delivers built-in IPsec encryption over the public internet without requiring physical cross-connects or third-party service provider provisioning.
Using HA VPN satisfies both the security (IPsec encryption) and low-capacity bandwidth requirements at minimal cost.

Key Concept

Selecting HA VPN vs Cloud Interconnect based on throughput, encryption, and cost requirements
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Topics

Designing Network Architecture and Hybrid Connectivity