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    PracticeGCP Professional Cloud ArchitectGCP Professional Cloud Architect Practice Exam 1Question 39
    Easy1 markMultiple Choice
    Subtask 1.1: Design a solution infrastructure that meets business requirementsDisaster RecoveryRTORPOCompute Engine

    GCP PCA · Question 39 · Design a solution infrastructure that meets business requirements

    You are designing a disaster recovery plan for a critical application running on Compute Engine. The business requires an RTO (Recovery Time Objective) of 4 hours and an RPO (Recovery Point Objective) of 1 hour. Which TWO actions should you include in your DR plan? (Select TWO)

    Answer options:

    A.

    Schedule Persistent Disk snapshots to run every hour.

    B.

    Schedule Persistent Disk snapshots to run every 4 hours.

    C.

    Create a custom machine image of the application servers and replicate it to the DR region.

    D.

    Configure synchronous database replication to the DR region.

    E.

    Export Cloud Logging data to a Cloud Storage bucket in the DR region.

    How to approach this question

    Match RPO to backup frequency, and RTO to recovery speed.

    Full Answer

    RPO (Recovery Point Objective) is the maximum acceptable data loss. To meet a 1-hour RPO, you must back up data (via PD snapshots) at least every hour. RTO (Recovery Time Objective) is the maximum acceptable downtime. Having a pre-configured custom machine image available in the DR region allows you to rapidly deploy new VMs, easily meeting the 4-hour RTO.

    Common mistakes

    Confusing RPO and RTO, or selecting synchronous replication which is overkill for a 1-hour RPO.
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