Google Professional Cloud Network Engineer Question 245
Single answerGoogle Cloud PlatformYou are designing a hybrid cloud network for an organization using Google Cloud. The organization has multiple Virtual Private Cloud (VPC) networks across different regions, and they want to establish connectivity between their on-premises data center and these VPCs using a single Cloud VPN tunnel. The organization requires that any new subnets created in any regional VPC should automatically propagate their routes to the on-premises data center. How should you configure the routing in this scenario?
- A
Enable global dynamic routing for the VPC networks.
- B
Enable regional dynamic routing for the VPC networks.
- C
Manually add static routes for each new subnet in the on-premises router.
- D
Use Cloud Router with BGP to propagate routes dynamically.
Show answer and explanation
Correct answer: A
Explanation
To meet the requirement of automatically propagating routes to the on-premises data center for all subnets across multiple VPCs and regions, global dynamic routing must be enabled. This ensures that all routes, regardless of region, are advertised to the on-premises network through the Cloud Router. Regional dynamic routing would restrict route propagation to a single region, and manual static routes would not provide the required automation and scalability.
- A. Correct.
Correct. Global dynamic routing allows routes from all VPCs, regardless of their region, to be propagated to the on-premises network automatically through the Cloud Router.
- B. Incorrect.
Incorrect. Regional dynamic routing limits route propagation to subnets within the same region, which does not meet the organization's requirement for global connectivity.
- C. Incorrect.
Incorrect. Manually adding static routes is not scalable and does not meet the requirement for automatic propagation of new subnets.
- D. Incorrect.
Incorrect. While Cloud Router with BGP is required for dynamic routing, it alone does not satisfy the requirement for global connectivity. Global dynamic routing must be enabled in conjunction with Cloud Router.