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Question 68 of 1,446

PCDE Practice Question: Manage a solution that can span multiple database technologies

A company is running a Cloud SQL for MySQL instance and needs to create a read replica in a different region for disaster recovery. They also want to be able to promote the replica to a standalone instance if needed. Which three steps should they take? (Choose THREE.)

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Enable binary logging on the primary instance

Cross-region replicas are created using the gcloud command with the --region flag and the --master-instance-name pointing to the primary. After creation, replication must be verified. If needed, the replica can be promoted using gcloud sql instances promote-replica.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Enable binary logging on the primary instance

    Why this is correct

    Binary logging must be enabled for replication.

  • Set the replica's database flags to enable read-only mode

    Why it's wrong here

    Read replicas are inherently read-only; no extra flag needed.

  • Use gcloud sql instances create <replica-name> --master-instance-name <primary> --region <target-region>

    Why this is correct

    This creates a cross-region read replica.

  • Run gcloud sql instances promote-replica <replica-name> to promote it

    Why this is correct

    Promotion makes the replica a standalone instance.

  • Create the replica in the same region as the primary

    Why it's wrong here

    Cross-region requires different region.

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Last reviewed: Jul 4, 2026

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