Google Cloud Professional Cloud Network Engineer — Question 42

You are using a 10-Gbps direct peering connection to Google together with the gsutil tool to upload files to Cloud Storage buckets from on-premises servers. The on-premises servers are 100 milliseconds away from the Google peering point. You notice that your uploads are not using the full 10-Gbps bandwidth available to you. You want to optimize the bandwidth utilization of the connection.
What should you do on your on-premises servers?

Answer options

• A. Tune TCP parameters on the on-premises servers.
• B. Compress files using utilities like tar to reduce the size of data being sent.
• C. Remove the -m flag from the gsutil command to enable single-threaded transfers.
• D. Use the perfdiag parameter in your gsutil command to enable faster performance: gsutil perfdiag gs://[BUCKET NAME].

Correct answer: A

Explanation

The correct answer is A because tuning TCP parameters can help optimize the existing bandwidth by adjusting how data packets are sent over the network. Options B, C, and D do not directly address the issue of bandwidth optimization; while compression can reduce transfer size, it does not improve bandwidth usage efficiency at high speeds. Switching to single-threaded transfers (C) would likely reduce throughput, and using the perfdiag parameter (D) is more for diagnostics than optimization.