Google Cloud Professional Cloud Network Engineer — Question 103

You recently noticed a recurring daily spike in network usage in your Google Cloud project. You need to identify the virtual machine (VM) instances and type of traffic causing the spike in traffic utilization while minimizing the cost and management overhead required. What should you do?

Answer options

• A. Enable VPC Flow Logs and send the output to BigQuery for analysis.
• B. Enable Firewall Rules Logging for all allowed traffic and send the output to BigQuery for analysis.
• C. Configure Packet Mirroring to send all traffic to a VM. Use Wireshark on the VM to identity traffic utilization for each VM in the VPC.
• D. Deploy a third-party network appliance and configure it as the default gateway. Use the third-party network appliance to identify users with high network traffic.

Correct answer: A

Explanation

The correct answer is A because enabling VPC Flow Logs provides detailed information about the network traffic without requiring significant management effort or costs. Option B is incorrect as Firewall Rules Logging does not provide the same level of detail about traffic usage. Option C is more complex and costly due to the need for Packet Mirroring and additional software, while option D involves deploying third-party solutions, increasing both costs and management overhead.