You are designing the architecture of your application to store data in Cloud Storage. Your application consists of pipelines that read data from a Cloud Storage bucket that contains raw data, and…

Question

Options

• AAdopt multi-regional Cloud Storage buckets in your architecture.
• BAdopt two regional Cloud Storage buckets, and update your application to write the output on both buckets.
• CAdopt a dual-region Cloud Storage bucket, and enable turbo replication in your architecture.
• DAdopt two regional Cloud Storage buckets, and create a daily task to copy from one bucket to the other.

• A
  16% (3)
• B
  5% (1)
• C
  74% (14)
• D
  5% (1)

Explanation

Option C is correct because a dual-region Cloud Storage bucket replicates data across two geographically separated regions, and enabling turbo replication guarantees that newly written objects are replicated to the second region within 15 minutes - minimizing RPO. Since it remains a single bucket endpoint, consuming applications require zero changes, satisfying the "no impact" requirement.

Why the distractors fail:

• A (Multi-regional): Multi-regional buckets do provide geo-redundancy, but turbo replication is only available on dual-region buckets, so you cannot guarantee a low RPO - making this worse than C for minimizing data loss.
• B (Write to both regional buckets): Writing to two separate buckets requires application-level changes, directly violating the "no impact on applications" constraint, and adds error-prone dual-write logic.
• D (Daily copy task): A daily copy creates an RPO of up to 24 hours - the opposite of minimizing RPO - making this the weakest option for resilience.

Memory tip: Associate the phrase "Dual + Turbo = 15-minute RPO, one bucket, no app changes." Whenever an exam question pairs regional failure resilience with minimize RPO and no application impact, that triple constraint points directly to dual-region + turbo replication.

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