You are designing a deployment technique for your new applications on Google Cloud. As part of your deployment planning, you want to use live traffic to gather performance metrics for both new and existing applications. You need to test against the full production load prior to launch. What should you do?

• A.Use blue/green deployment
• B.Use A/B testing with traffic mirroring during deployment
• C.Use canary deployment
• D.Use rolling updates deployment

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You have an application controlled by a managed instance group. When you deploy a new version of the application, costs should be minimized and the number of instances should not increase. You want to ensure that, when each new instance is created, the deployment only continues if the new instance is healthy.
What should you do?

• A.Perform a rolling-action with maxSurge set to 1, maxUnavailable set to 0.
• B.Perform a rolling-action with maxSurge set to 0, maxUnavailable set to 1
• C.Perform a rolling-action with maxHealthy set to 1, maxUnhealthy set to 0.
• D.Perform a rolling-action with maxHealthy set to 0, maxUnhealthy set to 1.

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You are building an API that will be used by Android and iOS apps The API must:
* Support HTTPs
* Minimize bandwidth cost
* Integrate easily with mobile apps
Which API architecture should you use?

• A.RESTful APIs
• B.MQTT for APIs
• C.gRPC-based APIs
• D.SOAP-based APIs

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You are developing an application that reads credit card data from a Pub/Sub subscription. You have written code and completed unit testing. You need to test the Pub/Sub integration before deploying to Google Cloud. What should you do?

• A.Create a service to publish messages, and deploy the Pub/Sub emulator. Collect the messages from Pub/Sub in production, and publish them to the emulator.
• B.Create a service to publish messages, and deploy the Pub/Sub emulator. Publish a standard set of testing messages from the publishing service to the emulator.
• C.Create a service to publish messages to your application. Collect the messages from Pub/Sub in production, and replay them through the publishing service.
• D.Create a service to publish messages, and deploy the Pub/Sub emulator. Generate random content in the publishing service, and publish to the emulator.

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Your company needs a database solution that stores customer purchase history and meets the following requirements:
Customers can query their purchase immediately after submission.
Purchases can be sorted on a variety of fields.
Distinct record formats can be stored at the same time.
Which storage option satisfies these requirements?

• A.Firestore in Datastore mode using a global query
• B.Cloud SQL using a SQL SELECT statement
• C.Cloud Storage using an object read
• D.Firestore in Native mode

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