Establishing a Secure Connection for Disaster Recovery in GCP

B.

To establish a secure, redundant connection between on-premises network and the GCP network for disaster recovery purposes, one of the recommended solutions is to use Dedicated Interconnect or Cloud VPN. The choice between the two will depend on specific requirements, such as bandwidth, latency, and cost.

Dedicated Interconnect is a private connection between on-premises and GCP networks that offers high bandwidth, low latency, and strong SLAs. It provides a dedicated physical connection that bypasses the public internet, ensuring security and reliability. With Dedicated Interconnect, data replication can be achieved using Google's Cloud Storage or other data transfer tools.

Cloud VPN is a software-based VPN solution that encrypts data traffic over the public internet. It offers a flexible, scalable, and cost-effective alternative to Dedicated Interconnect for low to moderate bandwidth requirements. With Cloud VPN, data replication can be achieved using Cloud Storage, Cloud SQL, or other data transfer tools.

Therefore, the recommended answer would be B: Verify that Dedicated Interconnect can replicate files to GCP. Verify that Cloud VPN can establish a secure connection between your networks if Dedicated Interconnect fails. This provides both high bandwidth and low latency for data replication via Dedicated Interconnect, and a secondary option via Cloud VPN in case of failure.

Answers A, C, and D are incorrect because they either recommend using the Transfer Appliance, which is a physical storage device for offline data transfer, or direct peering, which is not a recommended solution for disaster recovery due to its lack of redundancy and SLAs.