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    PracticeGCP Professional Cloud ArchitectGCP Professional Cloud Architect Practice Exam 1Question 10
    Hard1 markMultiple Choice
    Subtask 5.2: ReliabilityCompute EngineAutoscalingMIGs
    This question is part of a case study — click to read the full scenario(Case 06)

    CASE STUDY: Dress4Win

    Company Overview: Dress4Win is a web-based retail company that helps users organize their wardrobes.
    Current Environment: Colocated data center. Tomcat app servers, Nginx web servers, MySQL databases, Redis caching. 100TB of image data on SAN.
    Business Requirements: Migrate to cloud to handle seasonal spikes (Black Friday). Reduce CapEx. Enable rapid prototyping.
    Executive Statements: CEO: 'Innovate faster, stop worrying about servers.' CFO: 'Move to OpEx. Ensure PCI-DSS compliance.' CTO: 'Modernize stack but migrate quickly first.'
    Technical Requirements: Secure hybrid connectivity during migration. PCI-DSS compliance. Automated scaling. CI/CD for microservices.
    Constraints: Migration must be completed before Q4 holiday season (6 months). Limited budget for refactoring during initial migration.

    QUESTION:
    Given the CTO's statement and the 6-month constraint, which migration strategy should you recommend for the initial phase?

    View full case study page →

    GCP PCA · Question 10 · Reliability

    CASE STUDY: Dress4Win

    Company Overview: Dress4Win is a web-based retail company that helps users organize their wardrobes.
    Current Environment: Colocated data center. Tomcat app servers, Nginx web servers, MySQL databases, Redis caching. 100TB of image data on SAN.
    Business Requirements: Migrate to cloud to handle seasonal spikes (Black Friday). Reduce CapEx. Enable rapid prototyping.
    Executive Statements: CEO: 'Innovate faster, stop worrying about servers.' CFO: 'Move to OpEx. Ensure PCI-DSS compliance.' CTO: 'Modernize stack but migrate quickly first.'
    Technical Requirements: Secure hybrid connectivity during migration. PCI-DSS compliance. Automated scaling. CI/CD for microservices.
    Constraints: Migration must be completed before Q4 holiday season (6 months). Limited budget for refactoring during initial migration.

    QUESTION:
    To handle the Black Friday seasonal spikes for the initially migrated Compute Engine workloads, which TWO actions should you take? (Select TWO)

    Answer options:

    A.

    Place the Compute Engine instances in Managed Instance Groups (MIGs).

    B.

    Place the Compute Engine instances in Unmanaged Instance Groups.

    C.

    Configure autoscaling based on CPU utilization and HTTP load balancing capacity.

    D.

    Manually provision 100 extra VMs the day before Black Friday and delete them a week later.

    E.

    Use Preemptible VMs for the web tier to ensure maximum availability during the spike.

    How to approach this question

    Identify the Compute Engine features that provide automated horizontal scaling.

    Full Answer

    Managed Instance Groups (MIGs) allow you to operate apps on multiple identical VMs. You can make your workloads scalable and highly available by taking advantage of automated MIG services, including autoscaling, autohealing, and regional (multiple zone) deployment. Autoscaling policies based on CPU or Load Balancing capacity ensure the group scales out during Black Friday and scales in when traffic drops.

    Common mistakes

    Selecting Unmanaged Instance Groups, which are only used for grouping heterogeneous VMs for load balancing, not autoscaling.
    Question 09All questionsQuestion 11

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