Google Professional Cloud Network Engineer Question 244
Select 3Google Cloud PlatformYour organization has a Google Cloud Virtual Private Cloud (VPC) network hosting multiple subnets in different regions. You need to configure routing to ensure traffic between these subnets is properly managed. Additionally, you want to establish connectivity to an on-premises network via a Cloud VPN tunnel. Subnet-to-subnet communication within the VPC should happen automatically, while the VPN tunnel should dynamically exchange routes with the on-premises network. What steps should you take to achieve this configuration?
- A
Enable auto mode VPC to automatically handle all routing within the VPC.
- B
Configure a static route for the on-premises network pointing to the Cloud VPN tunnel.
- C
Enable dynamic routing on the Cloud VPN tunnel using Cloud Router.
- D
Use custom mode VPC and ensure subnet-to-subnet routes are automatically created.
- E
Configure a dynamic route for the on-premises network using Cloud Router and BGP.
Show answer and explanation
Correct answers: C, D, E
Explanation
To fulfill the requirements, you need to use a custom mode VPC to ensure subnet-to-subnet routes are automatically created. For on-premises connectivity, you should configure dynamic routing using Cloud Router and BGP to exchange routes automatically. Static routes are not scalable for dynamic environments, and auto mode VPC is not suitable for this scenario as it limits flexibility in custom network configurations.
- A. Incorrect.
Auto mode VPC creates predefined subnets and automatically manages routes for them, but it is not relevant here since the scenario involves a custom design and potentially multiple regions.
- B. Incorrect.
Static routes could work for on-premises connectivity, but they are not scalable for large or dynamic networks. The question specifies dynamic routing for on-premises connectivity.
- C. Correct.
Dynamic routing with Cloud Router is essential for automatically exchanging routes between the on-premises network and Google Cloud through the Cloud VPN tunnel.
- D. Correct.
Using a custom mode VPC ensures that subnet-to-subnet routes are automatically created within the VPC, which satisfies the requirement for internal VPC communication.
- E. Correct.
Dynamic routes with Cloud Router and BGP are required for scalable and automatic route exchange with the on-premises network.