Google Cloud Professional Cloud Developer — Question 295

You are developing a public web application on Cloud Run. You expose the Cloud Run service directly with its public IP address. You are now running a load test to ensure that your application is resilient against high traffic loads. You notice that your application performs as expected when you initiate light traffic. However, when you generate high loads, your web server runs slowly and returns error messages. How should you troubleshoot this issue?

Answer options

• A. Check the network traffic to Cloud Run in Cloud Monitoring to validate whether a traffic spike occurred. If necessary, enable traffic splitting on the Cloud Run instance to route some of the traffic to a previous instance revision.
• B. Check the min-instances value for your Cloud Run service. If necessary, increase the min-instances value to match the maximum number of virtual users in your load test.
• C. Check whether Cloud Armor is detecting distributed denial of service (DDoS) attacks and is blocking traffic before the traffic is routed to your Cloud Run service. If necessary, disable any Cloud Armor policies in your project.
• D. Check whether the Cloud Run service has scaled to a number of instances that equals the max-instances value. If necessary, increase the max-instances value.

Correct answer: D

Explanation

The correct answer is D because ensuring that the Cloud Run service scales to the maximum number of instances allows it to handle increased traffic loads effectively. Options A, B, and C do not address the core issue of instance scaling directly, which is critical for performance under high traffic conditions.