Explanation:
The correct answer is C. According to Google documentation and best practices for resilience testing, a well-designed application should be resilient enough to withstand the loss of one or more compute resources. Scheduling a disaster simulation exercise where all VMs in a zone are shut off allows you to test how your application behaves under such a failure scenario. This approach helps ensure that your authentication layer and the rest of the application continue to function despite the outage.
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Your customer has a regional managed instance group that serves a public REST API interfacing with a Cloud SQL instance. They want to perform resilience testing specifically for their authentication layer to ensure the system remains functional during failures. What should you do?
A
Engage with a security company to run web scrapers that look out for users' authentication data on malicious websites and notify you if any is found.
B
Deploy intrusion detection software to your virtual machines to detect and log unauthorized access.
C
Schedule a disaster simulation exercise during which you can shut off all VMs in a zone to see how your application behaves.
D
Configure a read replica for your Cloud SQL instance in a different zone than the master, and then manually trigger a failover while monitoring KPIs for our REST API.