The correct approach is to review the BeforeInstall script's output and exit code in the deployment logs or directly on the instance. This is because a lifecycle event script failure, such as a non-zero exit code from a bash command or a missing dependency, causes the CodeDeploy agent to mark that instance as failed, which can trigger the overall deployment failure when too many instances in the Auto Scaling group fail. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your ability to differentiate between script-level errors and configuration or connectivity issues—a common trap is to immediately suspect the appspec.yml syntax or the agent’s health, but the logs will show the exact script error. Remember, when troubleshooting a CodeDeploy BeforeInstall script failure, always check the exit code first: if it’s not zero, the script is the culprit, not the pipeline.
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 is using AWS CodeDeploy to deploy an application to an Auto Scaling group. The deployment fails with the error 'The overall deployment failed because too many individual instances failed deployment'. The SysOps administrator checks the deployment logs and finds that the BeforeInstall lifecycle event script is failing on some instances. The instances are Amazon Linux 2. What should the administrator do to troubleshoot this issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Review the BeforeInstall script's output and exit code in the deployment logs or on the instance.
The BeforeInstall script is failing; checking the script's exit code and logs on the instance is the correct approach. Option A is wrong because the appspec.yml file is likely fine if it runs the script. Option B is wrong because the issue is script execution, not agent connectivity. Option D is wrong because the issue is not about configuration file format.
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.
✗
Verify that the CodeDeploy agent on the instances is running and can communicate with the CodeDeploy service.
Why it's wrong here
Agent connectivity issues would cause a different error.
✗
Ensure that the CodeDeploy deployment configuration is set to 'OneAtATime' to reduce instance failures.
Why it's wrong here
Changing deployment config may not fix the script error.
✗
Check the appspec.yml file for syntax errors in the hooks section.
Why it's wrong here
Syntax errors would likely cause a different error earlier.
✓
Review the BeforeInstall script's output and exit code in the deployment logs or on the instance.
Why this is correct
The script's exit code and output will indicate why it failed.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: Review the BeforeInstall script's output and exit code in the deployment logs or on the instance. — The BeforeInstall script is failing; checking the script's exit code and logs on the instance is the correct approach. Option A is wrong because the appspec.yml file is likely fine if it runs the script. Option B is wrong because the issue is script execution, not agent connectivity. Option D is wrong because the issue is not about configuration file format.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.