📈 AWS Auto Scaling - DOP-C02 Practice Questions

Master target tracking, step scaling, scheduled scaling, predictive scaling, EC2 Auto Scaling groups, ECS service auto scaling, and scaling policies.

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DOP-C02 Auto Scaling Question Bank (5 Questions)

Browse all 5 practice questions covering AWS Auto Scaling for the DOP-C02 certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Incident and Event Response

    A company wants to automatically scale their ECS service up when a CloudWatch alarm triggers (indicating high load) and scale down when the alarm clears. What type of Auto Scaling policy implements alarm-based scaling?

    ATarget tracking scaling
    BStep scaling policy — defines scaling adjustments triggered by CloudWatch alarms; alarm breach triggers scaling steps; alarm clearing with different thresholds triggers scale-in steps
    CScheduled scaling
    DPredictive scaling

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  2. Question 2Resilient Cloud Solutions

    A company's application on EC2 Auto Scaling in an ALB + ASG setup needs to achieve zero-downtime deployments. What is the CORRECT approach using CodeDeploy?

    AStop all instances, deploy, restart
    BUse CodeDeploy in-place with OneAtATime deployment configuration so only one instance is updated at a time; or use blue/green with a new ASG and traffic shift
    CUse rolling updates in the Auto Scaling group directly
    DDeploy using a CloudFormation stack update

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  3. Question 3Resilient Cloud Solutions

    A company deploys their application on EC2 instances in an Auto Scaling group. They want to perform rolling updates when launching new AMIs. Which Auto Scaling feature enables rolling AMI updates without requiring a new ASG?

    ATerminate all instances and relaunch
    BUse Auto Scaling instance refresh — triggers a rolling replacement of instances in the ASG using the new launch template version; configurable minimum healthy percentage and warm-up time
    CUpdate the launch template and wait for natural turnover
    DUse CodeDeploy in-place deployment for AMI updates

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  4. Question 4Resilient Cloud Solutions

    A company wants to optimize their Auto Scaling group to use a mix of On-Demand and Spot Instances for cost savings while maintaining availability. What ASG feature enables this?

    ACreate separate ASGs for On-Demand and Spot
    BUse ASG mixed instances policy with multiple instance types and Spot allocation strategy (price-capacity-optimized); set On-Demand base capacity for baseline; additional capacity uses Spot; multiple instance types reduce interruption risk
    CUse Spot Instance Requests directly
    DSpot Instances cannot be used in Auto Scaling groups

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  5. Question 5Resilient Cloud Solutions

    A company wants to protect their production EC2 Auto Scaling group from scale-in terminations during business hours. Critical batch jobs run between 9AM-5PM and must not be interrupted. What ASG configuration prevents scale-in?

    ADisable Auto Scaling during business hours
    BUse ASG scheduled actions: at 9AM, set MinSize = DesiredCapacity (prevents scale-in); at 5PM, reset MinSize to original value (allows scale-in); or use LifecyclePolicies to protect instances processing batch jobs
    CIncrease the scale-in cooldown period to 8 hours
    DUse On-Demand instances to prevent termination

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Key Auto Scaling Concepts for DOP-C02

auto scalingasgtarget trackingstep scalingscheduled scalingpredictive scalingscaling policy

DOP-C02 Auto Scaling Exam Tips

AWS Auto Scaling questions in DOP-C02 are typically scenario-based. Focus on CI/CD automation, reliability engineering, and feedback-driven operations. Priority concepts: auto scaling, asg, target tracking, step scaling, scheduled scaling, predictive scaling.

What DOP-C02 Expects

  • Anchor your answer in choose auditable, automated release and operations patterns with strong rollback readiness.
  • Auto Scaling scenarios for DOP-C02 are frequently mapped to Domain 3 (15%), Domain 4 (15%), so read the objective carefully before picking controls or architecture.
  • Expect multi-topic scenarios where Auto Scaling interacts with IAM, networking, storage, or observability patterns rather than appearing as an isolated question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and vendor best practices.

High-Value Auto Scaling Concepts

  • Know the core Auto Scaling building blocks cold: auto scaling, asg, target tracking, step scaling.
  • Review the edge-case features and limits for scheduled scaling, predictive scaling; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how Auto Scaling pairs with Monitoring, Containers, Elastic Beanstalk in real deployment patterns.
  • For DOP-C02, explain why the chosen Auto Scaling design meets reliability, security, and cost expectations better than the alternatives.

Common DOP-C02 Traps

  • Watch for manual promotion and approval logic where pipeline automation is expected.
  • Questions in Resilient Cloud Solutions often include distractors that look correct for Auto Scaling but violate least-privilege, durability, or availability requirements.
  • Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
  • If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

  • Can you compare at least two Auto Scaling implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Resilient Cloud Solutions (15%) outcomes for DOP-C02?
  • Can you explain security and access boundaries for Auto Scaling without relying on default-open assumptions?
  • Can you describe how Auto Scaling integrates with Monitoring and Containers during failure, scaling, and monitoring events?

Exam Domains Covering Auto Scaling

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