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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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 SysOps administrator needs to deploy an application to a set of EC2 instances in an Auto Scaling group. The deployment must be performed in batches, with each batch health-checked before proceeding. Which AWS CodeDeploy deployment configuration 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

✓

CodeDeployDefault.OneAtATime

CodeDeployDefault.OneAtATime is the correct deployment configuration because it deploys the application revision to one EC2 instance at a time, waiting for the instance to pass health checks before proceeding to the next. This ensures that the deployment is performed in batches of one, with each batch health-checked before moving on, which aligns with the requirement for batch-based, health-checked deployments.

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.

  • ✓

    CodeDeployDefault.OneAtATime

    Why this is correct

    OneAtATime deploys to one instance at a time, with health checks between each.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    CodeDeployDefault.AllAtOnce

    Why it's wrong here

    AllAtOnce deploys to all instances at once, not in batches.

  • ✗

    CodeDeployDefault.HalfAtATime

    Why it's wrong here

    HalfAtATime deploys to half the instances at a time, not one by one.

  • ✗

    CodeDeployDefault.Custom

    Why it's wrong here

    Custom requires user-defined configuration, but the scenario fits the predefined OneAtATime.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse 'HalfAtATime' with a batch-based approach, but it does not health-check each individual instance before proceeding to the next batch; it only checks the overall health of the fleet after each batch, which can mask failures in specific instances.

Trap categories for this question

  • Scenario analysis trap

    Custom requires user-defined configuration, but the scenario fits the predefined OneAtATime.

Detailed technical explanation

How to think about this question

CodeDeploy deployment configurations define the number of instances that are updated simultaneously and the success criteria for each batch. The OneAtATime configuration uses a minimum healthy host count of 1 and a maximum of 1, ensuring that only one instance is taken offline at a time, and the deployment proceeds only after the instance passes health checks (e.g., ELB health checks or CodeDeploy agent heartbeats). In contrast, HalfAtATime uses a minimum healthy host count of 50% of the fleet, which can lead to scenarios where a failed batch halts the entire deployment without per-instance granularity.

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: CodeDeployDefault.OneAtATime — CodeDeployDefault.OneAtATime is the correct deployment configuration because it deploys the application revision to one EC2 instance at a time, waiting for the instance to pass health checks before proceeding to the next. This ensures that the deployment is performed in batches of one, with each batch health-checked before moving on, which aligns with the requirement for batch-based, health-checked deployments.

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.