You set up an autoscaling instance group to serve web traffic for an upcoming launch. After configuring the instance group as a backend service to an HTTP(S) load balancer, you notice that virtual machine (VM) instances are being terminated and re-launched every minute. The instances do not have a public IP address. You have verified the appropriate web response is coming from each instance using the curl command. You want to ensure the backend is configured correctly. What should you do?

• A.Ensure that a firewall rule exists to allow source traffic on HTTP/HTTPS to reach the load balancer.
• B.Assign a public IP to each instance and configure a firewall rule to allow the load balancer to reach the instance public IP.
• C.Ensure that a firewall rule exists to allow load balancer health checks to reach the instances in the instance group.
• D.Create a tag on each instance with the name of the load balancer. Configure a firewall rule with the name of the load balancer as the source and the instance tag as the destination.

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Your customer is receiving reports that their recently updated Google App Engine application is taking approximately 30 seconds to load for some of their users. This behavior was not reported before the update. What strategy should you take?

• A.Work with your ISP to diagnose the problem.
• B.Open a support ticket to ask for network capture and flow data to diagnose the problem, then roll back your application.
• C.Roll back to an earlier known good release initially, then use Stackdriver Trace and logging to diagnose the problem in a development/test/staging environment.
• D.Roll back to an earlier known good release, then push the release again at a quieter period to investigate. Then use Stackdriver Trace and logging to diagnose the problem.

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For this question, refer to the Mountkirk Games case study.
Mountkirk Games' gaming servers are not automatically scaling properly. Last month, they rolled out a new feature, which suddenly became very popular. A record number of users are trying to use the service, but many of them are getting 503 errors and very slow response times. What should they investigate first?

• A.Verify that the database is online.
• B.Verify that the project quota hasn't been exceeded.
• C.Verify that the new feature code did not introduce any performance bugs.
• D.Verify that the load-testing team is not running their tool against production.

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Your organization wants to control IAM policies for different departments independently, but centrally.
Which approach should you take?

• A.Multiple Organizations with multiple Folders
• B.Multiple Organizations, one for each department
• C.A single Organization with Folder for each department
• D.A single Organization with multiple projects, each with a central owner

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For this question refer to the TerramEarth case study
Operational parameters such as oil pressure are adjustable on each of TerramEarth's vehicles to increase their efficiency, depending on their environmental conditions. Your primary goal is to increase the operating efficiency of all 20 million cellular and unconnected vehicles in the field How can you accomplish this goal?

• A.Have your engineers inspect the data for patterns, and then create an algorithm with rules that make operational adjustments automatically.
• B.Capture all operating data, train machine learning models that identify ideal operations, and run locally to make operational adjustments automatically.
• C.Implement a Google Cloud Dataflow streaming job with a sliding window, and use Google Cloud Messaging (GCM) to make operational adjustments automatically.
• D.Capture all operating data, train machine learning models that identify ideal operations, and host in Google Cloud Machine Learning (ML) Platform to make operational adjustments automatically.

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