Question-51: Google's Cloud Datastore is a schema-free NoSQL datastore that is hosted in the cloud. Your data can be queried by applications using SQL-like queries that support filtering and sorting if the data is stored in Datastore. Read and write availability is increased significantly as a result of datastore's practise of replicating data across multiple datacenters. QuickTechie, Inc. has come to the conclusion that the best place to store user profiles is on Google Cloud Datastore, and application servers should be moved to Google Compute Engine. The ability to read and process data that is stored in multiple files on a disk, in a remote location, or in a database as a single entity is made possible by a datastore. In order for the current infrastructure to upload the data during the migration, it will need access to Datastore. Which approach to the administration of service account keys would you suggest we take?
A. Create service account keys for the on-premises infrastructure as well as the Google Cloud Platform virtual machines (VMs).
B. Using a user account, authenticate the on-premises infrastructure, and then supply service account keys for the virtual machines (VMs).
C. Use Google Cloud Platform (GCP) managed keys for the virtual machines and provision service account keys for the on-premises infrastructure.
D. For the on-premises architecture, deploy a custom authentication service on GCE/Google Kubernetes Engine (GKE), and utilise GCP managed keys for the VMs.

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