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Deployment, Provisioning, and Automation →easyMultiple ChoiceObjective-mapped

SOA-C02 Deployment, Provisioning, and Automation Practice Question

This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A company needs to deploy a new version of an application to an Auto Scaling group. The deployment must ensure that the new version is deployed to all instances, and if any instance fails, the deployment should roll back. Which deployment strategy should be used?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Rolling deployment with rollback

A rolling deployment with rollback is the correct choice because it updates instances incrementally, replacing the old version with the new one across the Auto Scaling group while monitoring for failures. If any instance fails to become healthy (e.g., failing an ELB health check), the deployment automatically rolls back to the previous version, ensuring no partial or failed deployment persists. This strategy balances safety and speed, directly meeting the requirement to deploy to all instances with automatic rollback on failure.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Blue/green deployment

    Why it's wrong here

    Blue/green is for replacing entire environments, not gradual within an Auto Scaling group.

  • ✓

    Rolling deployment with rollback

    Why this is correct

    Rolling deployment updates instances in batches; rollback reverts changes if failures occur.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    All-at-once deployment

    Why it's wrong here

    All-at-once is risky; if it fails, the entire fleet is affected.

  • ✗

    Canary deployment

    Why it's wrong here

    Canary is for Lambda functions, not Auto Scaling groups.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse 'rolling deployment with rollback' with 'blue/green deployment' because both involve health checks, but blue/green does not automatically roll back on instance failure during the update—it only switches traffic after full validation, making it unsuitable for the stated requirement of automatic rollback on any instance failure.

Detailed technical explanation

How to think about this question

Under the hood, AWS Auto Scaling rolling updates use a 'batching' approach where instances are taken out of service, updated, and then re-registered with the load balancer; the deployment pauses if health checks fail, triggering a rollback via CloudFormation's 'RollbackConfiguration' or the Auto Scaling group's 'InstanceRefresh' failure handling. A subtle behavior is that the rollback only reverts to the previous launch template or configuration, not to a prior state of the application data, so stateful applications require additional safeguards. In a real-world scenario, if a new AMI causes a boot loop, the rolling update will detect the failed health check after the batch completes and automatically revert all instances to the old AMI, preventing a full outage.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Rolling deployment with rollback — A rolling deployment with rollback is the correct choice because it updates instances incrementally, replacing the old version with the new one across the Auto Scaling group while monitoring for failures. If any instance fails to become healthy (e.g., failing an ELB health check), the deployment automatically rolls back to the previous version, ensuring no partial or failed deployment persists. This strategy balances safety and speed, directly meeting the requirement to deploy to all instances with automatic rollback on failure.

What should I do if I get this SOA-C02 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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This SOA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SOA-C02 exam.