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QuestionQ21

Planning and configuring a cloud solution

You have been asked to create robust Virtual Private Network (VPN) connectivity between a new Virtual Private Cloud (VPC) and a remote site. Key requirements include dynamic routing, a shared address space of 10.19.0.1/22, and no overprovisioning of tunnels during a failover event. You want to follow Google- recommended practices to set up a high availability Cloud VPN. What should you do?

  • A Use a custom mode VPC network, configure static routes, and use active/passive routing.
  • B Use an automatic mode VPC network, configure static routes, and use active/active routing.
  • C Use a custom mode VPC network, use Cloud Router border gateway protocol (BGP) routes, and use active/passive routing.
  • D Use an automatic mode VPC network, use Cloud Router border gateway protocol (BGP) routes, and configure policy-based routing.
Explanation

To meet the requirements of dynamic routing with BGP, a dedicated address space, and no tunnel overprovisioning, use a custom mode VPC (for precise IP control), Cloud Router with BGP (for dynamic routing that automatically adapts to topology changes), and active/passive routing configuration (which avoids unnecessary tunnel redundancy). Automatic mode VPC and static routes do not support the required flexibility and dynamic capabilities.

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