You are designing a large distributed application with 30 microservices. Each of your distributed microservices needs to connect to a database back-end. You want to store the credentials securely. Where should you store the credentials?

• A.In the source code
• B.In an environment variable
• C.In a secret management system
• D.In a config file that has restricted access through ACLs

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For this question, refer to the TerramEarth case study. You are asked to design a new architecture for the ingestion of the data of the 200,000 vehicles that are connected to a cellular network. You want to follow Google-recommended practices.
Considering the technical requirements, which components should you use for the ingestion of the data?

• A.Compute Engine with project-wide SSH keys
• B.Google Kubernetes Engine with an SSL Ingress
• C.Compute Engine with specific SSH keys
• D.Cloud IoT Core with public/private key pairs

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You are helping the QA team to roll out a new load-testing tool to test the scalability of your primary cloud services that run on Google Compute Engine with Cloud Bigtable.
Which three requirements should they include? Choose 3 answers

• A.Ensure that the load tests validate the performance of Cloud Bigtable.
• B.Create a separate Google Cloud project to use for the load-testing environment.
• C.Schedule the load-testing tool to regularly run against the production environment.
• D.Ensure all third-party systems your services use are capable of handling high load.
• E.Instrument the production services to record every transaction for replay by the load-testing tool.
• F.Instrument the load-testing tool and the target services with detailed logging and metrics collection.

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Your company's test suite is a custom C++ application that runs tests throughout each day on Linux virtual machines. The full test suite takes several hours to complete, running on a limited number of on-premises servers reserved for testing. Your company wants to move the testing infrastructure to the cloud, to reduce the amount of time it takes to fully test a change to the system, while changing the tests as little as possible.
Which cloud infrastructure should you recommend?

• A.Google Compute Engine unmanaged instance groups and Network Load Balancer
• B.Google Compute Engine managed instance groups with auto-scaling
• C.Google Cloud Dataproc to run Apache Hadoop jobs to process each test
• D.Google App Engine with Google StackDriver for logging

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You have an outage in your Compute Engine managed instance group: all instance keep restarting after 5 seconds. You have a health check configured, but autoscaling is disabled. Your colleague, who is a Linux expert, offered to look into the issue. You need to make sure that he can access the VMs. What should you do?

• A.Grant your colleague the IAM role of project Viewer
• B.Perform a rolling restart on the instance group
• C.Disable the health check for the instance group. Add his SSH key to the project-wide SSH keys
• D.Disable autoscaling for the instance group. Add his SSH key to the project-wide SSH Keys

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