Google Cloud and Hybrid Network Architecture:Reliable Google Cloud Infrastructure: Design and Process (Preparing for Google Cloud Certification: Cloud Architect Professional Certificate) Answers 2025

Question 1

Need a secure, private, extremely reliable connection — low volume.

❌ VPC peering
🟩 VPN with high availability and Cloud Router
❌ Cloud Interconnect
❌ VPN

Explanation:

You need:

• Private connection

• High reliability

• Low volume

A High-Availability VPN with Cloud Router provides reliability and failover, ideal for low-to-medium traffic.
Cloud Interconnect is overkill for low volume.

Question 2

Connecting a partner-owned VPC to your VPC within Google Cloud.

❌ VPN with HA Router
🟩 VPC peering
❌ Cloud Interconnect
❌ VPN

Explanation:

When both networks are inside Google Cloud, VPC Peering is the simplest and fastest private connection method.
VPN is for hybrid (on-prem <-> Google Cloud) connections.

Question 3

Large bank → needs high-volume access to on-prem mainframe data.

❌ VPN
❌ HTTPS
❌ Peering
🟩 Cloud Interconnect

Explanation:

High bandwidth + low latency → use Cloud Interconnect.
VPN cannot handle very high throughput at enterprise scale.

Question 4

Large-scale global web app + static content + global users.

❌ Application LB with SSL
❌ Network LB with SSL + CDN
🟩 Application Load Balancer with SSL + CDN
❌ Network LB with SSL

Explanation:

For global HTTP/HTTPS traffic:

• Use Global Application Load Balancer

• Enable Cloud CDN for static content caching

• Use SSL for security

This is the best configuration for worldwide traffic and performance.

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