Google Professional Cloud Architect
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Your company has a custom C++ application used as a test suite, running tests throughout each day on Linux virtual machines. Currently, the full test suite requires several hours to complete, all while operating on a limited number of on-premises servers designated for testing purposes. Given the prolonged testing duration, your company aims to migrate the testing infrastructure to the cloud to drastically reduce the time required to fully test any changes made to the system. The objective is to make this transition while keeping alterations to the test suite itself to a minimum. In this context, what cloud infrastructure solution would you recommend?
Explanation:
The correct answer is B. Google Compute Engine managed instance groups with auto-scaling. This option allows you to automatically add or remove instances based on the load, which is crucial for handling the long-duration tests efficiently. Managed instance groups will help in scaling the infrastructure up during peak testing times and scaling down when tests are not being run, ensuring cost efficiency. The other options are less suitable; for example, unmanaged instance groups with a Network Load Balancer do not provide the necessary auto-scaling capabilities, Apache Hadoop is not appropriate for C++ testing, and Google App Engine is designed for web applications, which would require significant changes to the test suite.