Google Cloud Professional Cloud Network Engineer — Question 162

You have two VPCs: VPC A in Project A and VPC B in Project B. The VPCs are peered, and each VPC has VM instances in four zones. You are using the Network Intelligence Center Performance Dashboard to investigate the packet loss for traffic flows that start in VPC A and terminate in VPC B. You need the reported packet loss metric to have at least a 90% confidence level. What should you do?

Answer options

• A. Ensure that each zone in each of the VPC networks has at least 10 compute instances. Look in Project A for the reported metric.
• B. Ensure that each zone in each of the VPC networks has at least 9 compute instances. Look in Project B for the reported metric.
• C. Ensure that each zone in each of the VPC networks has at least 9 compute instances. Look in Project A for the reported metric.
• D. Ensure that each zone in each of the VPC networks has at least 10 compute instances. Look in Project B for the reported metric.

Correct answer: D

Explanation

The correct answer is D because having at least 10 compute instances in each zone ensures a higher level of confidence in the reported metrics. Looking in Project B is necessary since the traffic terminates there, making it essential to check for the metrics in the destination project. Options A and C suggest checking Project A, which would not provide the accurate results needed for traffic to VPC B, while option B does not meet the instance requirement for 90% confidence.