Practice Test 3 | Google Cloud Certified Professional Cloud Architect | Dumps | Mock Test
You are running an application in Google App Engine that is serving production traffic. You want to deploy a risky but necessary change to the application. It could take down your service if not properly coded. During development of the application, you realized that it can only be properly tested by live user traffic. How should you test the feature?
A. Deploy the new application version temporarily, and then roll it back.
B. Create a second project with the new app in isolation, and onboard users.
C. Set up a second Google App Engine service, and then update a subset of clients to hit the new service.
D. Deploy a new version of the application and use traffic splitting to send a small percentage of traffic to it.
Correct Answer D
Feedback
D (Correct Answer) – Deploying a new version without assigning it as the default version will not create downtime for the application. Using traffic splitting allows for easily redirecting a small amount of traffic to the new version and can also be quickly reverted without application downtime.
A – Deploying the application version as default requires moving all traffic to the new version. This could impact all users and disable the service.
B – Deploying a second project requires data synchronization and having an external traffic splitting solution to direct traffic to the new application. While this is possible, with Google App Engine, these manual steps are not required.
C – App Engine services are intended for hosting different service logic. Using different services would require manual configuration of the consumers of services to be aware of the deployment process and manage from the consumer side who is accessing which service.
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