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    PracticeGCP Professional Cloud ArchitectGCP Professional Cloud Architect Practice Exam 1Question 20
    Medium1 markMultiple Choice
    Subtask 5.3: Cost OptimizationCost ManagementBilling ExportLabelsBigQuery
    This question is part of a case study — click to read the full scenario(Case 16)

    CASE STUDY: HealthCare360

    Company Overview: HealthCare360 provides EHR systems to hospitals in NA and EU.
    Current Environment: Isolated on-prem deployments. Fragmented data.
    Business Requirements: Centralize EHR in cloud. Enable cross-hospital research. Ensure compliance.
    Executive Statements: CEO: 'Transforming to SaaS.' CFO: 'Need cost attribution per tenant.' CSO: 'Zero compromise on HIPAA/GDPR.'
    Technical Requirements: Multi-region active-active deployment. Microservices on GKE. End-to-end encryption (CMEK). Strict network perimeters.
    Constraints: Zero data loss (RPO=0). RTO < 15 minutes. HIPAA (US) and GDPR (EU) compliance.

    QUESTION:
    To meet the requirement for a multi-region active-active deployment with an RPO of 0, which TWO database architectures could you use? (Select TWO)

    View full case study page →

    GCP PCA · Question 20 · Cost Optimization

    CASE STUDY: HealthCare360

    Company Overview: HealthCare360 provides EHR systems to hospitals in NA and EU.
    Current Environment: Isolated on-prem deployments. Fragmented data.
    Business Requirements: Centralize EHR in cloud. Enable cross-hospital research. Ensure compliance.
    Executive Statements: CEO: 'Transforming to SaaS.' CFO: 'Need cost attribution per tenant.' CSO: 'Zero compromise on HIPAA/GDPR.'
    Technical Requirements: Multi-region active-active deployment. Microservices on GKE. End-to-end encryption (CMEK). Strict network perimeters.
    Constraints: Zero data loss (RPO=0). RTO < 15 minutes. HIPAA (US) and GDPR (EU) compliance.

    QUESTION:
    How should you design the resource hierarchy and billing to meet the CFO's requirement for cost attribution per hospital tenant?

    Answer options:

    A.

    Create a separate Cloud Billing Account for every hospital.

    B.

    Apply GCP labels (e.g., tenant_id) to all resources and export Cloud Billing data to BigQuery for analysis.

    C.

    Use Cloud Monitoring to track CPU usage per hospital and calculate costs manually.

    D.

    Create a separate GCP Organization for each hospital.

    How to approach this question

    Identify the standard GCP mechanism for tracking costs across shared infrastructure.

    Full Answer

    B.Apply GCP labels (e.g., tenant_id) to all resources and export Cloud Billing data to BigQuery for analysis.✓ Correct
    To achieve granular cost attribution (chargeback/showback) in a multi-tenant SaaS environment, you should apply GCP Labels to resources (e.g., VMs, buckets, clusters). You then enable Cloud Billing export to BigQuery. The labels appear as columns in BigQuery, allowing the finance team to write SQL queries to aggregate costs per tenant.

    Common mistakes

    Creating separate billing accounts or organizations, which creates massive operational overhead.
    Question 19All questionsQuestion 21

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