For IndividualsFor Educators
ExpertMinds LogoExpertMinds
ExpertMinds

Ace your certifications with Practice Exams and AI assistance.

  • Browse Exams
  • For Educators
  • Blog
  • Privacy Policy
  • Terms of Service
  • Cookie Policy
  • Support
  • AWS SAA Exam Prep
  • PMI PMP Exam Prep
  • CPA Exam Prep
  • GCP PCA Exam Prep

© 2026 TinyHive Labs. Company number 16262776.

    PracticeGCP Professional Cloud ArchitectGCP Professional Cloud Architect Practice Exam 6Question 09
    Medium1 markMultiple Choice
    Subtask 2.3: Compute SystemsIntegrationPub/SubAsynchronousCloud Run
    This question is part of a case study — click to read the full scenario(Case 06)

    CASE STUDY: RetailMart

    Overview:
    Industry: Retail/E-commerce
    Size: 2000 employees, $500M revenue

    Environment:

    • Monolithic Java app on VMware
    • Oracle RAC DB
    • F5 Load Balancers
    • 10 Gbps Direct Connect to AWS

    Requirements:

    • CapEx to OpEx
    • Handle 10x Black Friday traffic
    • Personalized recommendations
    • Modernize without impacting sales

    Exec Statements:

    • CEO: Omnichannel experience.
    • CFO: Predictable costs, no hardware refresh.
    • CTO: Break monolith, but Oracle DB stays on-prem for 2 years.

    Tech Reqs:

    • Zero downtime deployments
    • PCI-DSS compliance
    • Image processing pipeline
    • Async order processing

    Constraints:

    • Hybrid architecture required
    • Team knows Spring Boot, zero Kubernetes exp
    • 6-month timeline

    QUESTION: The CTO requires the Oracle database to remain on-premises while the application moves to GCP. Which hybrid connectivity solution should you implement to ensure high throughput and low latency?

    View full case study page →

    GCP PCA · Question 09 · Compute Systems

    CASE STUDY: RetailMart

    Overview:
    Industry: Retail/E-commerce
    Size: 2000 employees, $500M revenue

    Environment:

    • Monolithic Java app on VMware
    • Oracle RAC DB
    • F5 Load Balancers
    • 10 Gbps Direct Connect to AWS

    Requirements:

    • CapEx to OpEx
    • Handle 10x Black Friday traffic
    • Personalized recommendations
    • Modernize without impacting sales

    Exec Statements:

    • CEO: Omnichannel experience.
    • CFO: Predictable costs, no hardware refresh.
    • CTO: Break monolith, but Oracle DB stays on-prem for 2 years.

    Tech Reqs:

    • Zero downtime deployments
    • PCI-DSS compliance
    • Image processing pipeline
    • Async order processing

    Constraints:

    • Hybrid architecture required
    • Team knows Spring Boot, zero Kubernetes exp
    • 6-month timeline

    QUESTION: How should you design the asynchronous order processing system to ensure no orders are lost during Black Friday spikes?

    Answer options:

    A.

    Write orders directly to the on-premises Oracle database using synchronous REST APIs.

    B.

    Publish orders to a Pub/Sub topic and use push subscriptions to trigger Cloud Run services.

    C.

    Store orders in an in-memory Memorystore (Redis) cache and run a cron job to process them hourly.

    D.

    Use Cloud Tasks to execute synchronous HTTP calls to the inventory service.

    How to approach this question

    Identify the GCP service designed for decoupled, highly scalable asynchronous messaging.

    Full Answer

    B.Publish orders to a Pub/Sub topic and use push subscriptions to trigger Cloud Run services.✓ Correct
    Publish orders to a Pub/Sub topic and use push subscriptions to trigger Cloud Run services.
    Cloud Pub/Sub is a globally distributed message bus that decouples senders and receivers. By placing Pub/Sub between the frontend and the backend order processors, you protect the backend (and the on-prem database) from traffic spikes. Pub/Sub retains messages until they are successfully acknowledged.

    Common mistakes

    Choosing synchronous APIs (A), which creates tight coupling and leads to cascading failures under heavy load.
    Question 08All questionsQuestion 10

    Practice the full GCP Professional Cloud Architect Practice Exam 6

    50 questions · hints · full answers · grading

    Sign up freeTake the exam

    More questions from this exam

    Q01CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Env...MediumQ02CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Env...MediumQ03CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Env...HardQ04CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Env...MediumQ05CASE STUDY: TechStream Gaming Overview: Industry: Gaming Size: 500 employees, $100M revenue Env...Easy
    View all 50 questions →