GCP Associate Cloud Engineer Practice Question

Your company stores compliance reports that must remain accessible even if an entire Google Cloud region in the United States becomes unavailable. Data-residency rules prohibit the data from leaving the United States. You want the simplest configuration that automatically keeps redundant copies in at least two U.S. regions, provides the highest availability service-level objective that Cloud Storage offers for this scenario, and requires no custom replication jobs or additional infrastructure. Which bucket location meets these requirements?

Create two regional buckets in "us-central1" and "us-east1" and schedule daily Storage Transfer Service jobs between them.
Create a single regional bucket in "us-central1" and enable Autoclass to move objects between storage classes automatically.
Create a dual-region bucket spanning "us-central1" and "us-east1" with Turbo Replication enabled.
Create a Cloud Storage bucket with location set to the "us" multi-region.

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Answer Description

A multi-region bucket with its location set to "us" automatically replicates each object to two or more geographically separate U.S. regions that are at least 100 miles apart. Google manages this asynchronous replication, so no transfer jobs or extra infrastructure are needed. The "us" multi-region keeps all data within United States boundaries and offers Cloud Storage's highest published availability SLA for object reads and writes (99.95% monthly). A dual-region bucket would also provide geo-redundancy but requires choosing a specific region pair at creation, while maintaining two separate regional buckets with Storage Transfer Service adds operational overhead and lacks SLA guarantees during failures. A single regional bucket cannot survive a full regional outage.

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