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PROFESSIONAL-CLOUD-NETWORK-ENGINEER · Question #105

Your company has separate Virtual Private Cloud (VPC) networks in a single region for two departments: Sales and Finance. The Sales department's VPC network already has connectivity to on-premises…

The correct answer is D. Peer the two VPCs. Configure VPC Network Peering to export custom routes from Sales and. https://cloud.google.com/vpc/docs/vpc-peering#benefits_of_exchanging_custom_routes Cloud Router doesn't learn routes and propagate routes from peered VPC networks. As a result, you must have a custom route advertisement on the Cloud Router.

Submitted by khalil_dz· Apr 18, 2026Implementing a Google Cloud network

Question

Your company has separate Virtual Private Cloud (VPC) networks in a single region for two departments: Sales and Finance. The Sales department's VPC network already has connectivity to on-premises locations using HA VPN, and you have confirmed that the subnet ranges do not overlap. You plan to peer both VPC networks to use the same HA tunnels for on-premises connectivity, while providing internet connectivity for the Google Cloud workloads through Cloud NAT. Internet access from the on-premises locations should not flow through Google Cloud. You need to propagate all routes between the Finance department and on-premises locations. What should you do?

Options

  • APeer the two VPCs, and use the default configuration for the Cloud Routers.
  • BPeer the two VPCs, and use Cloud Router's custom route advertisements to announce the
  • CPeer the two VPCs. Configure VPC Network Peering to export custom routes from Sales and
  • DPeer the two VPCs. Configure VPC Network Peering to export custom routes from Sales and

How the community answered

(28 responses)
  • A
    4% (1)
  • B
    21% (6)
  • C
    11% (3)
  • D
    64% (18)

Explanation

https://cloud.google.com/vpc/docs/vpc-peering#benefits_of_exchanging_custom_routes Cloud Router doesn't learn routes and propagate routes from peered VPC networks. As a result, you must have a custom route advertisement on the Cloud Router.

Topics

#VPC Network Peering#Cloud Router#HA VPN#Route Propagation

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