Google Cloud Professional Data Engineer — Question 272

You need to migrate 1 PB of data from an on-premises data center to Google Cloud. Data transfer time during the migration should take only a few hours. You want to follow Google-recommended practices to facilitate the large data transfer over a secure connection. What should you do?

Answer options

• A. Establish a Cloud Interconnect connection between the on-premises data center and Google Cloud, and then use the Storage Transfer Service.
• B. Use a Transfer Appliance and have engineers manually encrypt, decrypt, and verify the data.
• C. Establish a Cloud VPN connection, start gcloud compute scp jobs in parallel, and run checksums to verify the data.
• D. Reduce the data into 3 TB batches, transfer the data using gsutil, and run checksums to verify the data.

Correct answer: A

Explanation

The correct answer is A because establishing a Cloud Interconnect provides a high-speed and secure connection ideal for transferring large volumes of data, while the Storage Transfer Service automates the migration process. Options B and C involve manual processes or slower connections that are not optimal for such a large data transfer, and option D unnecessarily complicates the transfer by batching data instead of leveraging the capabilities of the Storage Transfer Service.