← DOP-C02·Amazon Web Services

Question 1,196 of 1,740

SDLC Automation →mediumMultiple ChoiceObjective-mapped

Quick Answer

The correct action is to configure the CodeBuild project to run tests in parallel by using separate build environments or test splits. This approach directly addresses the root cause of intermittent timeouts by distributing the test workload across multiple concurrent executions, which reduces the overall build duration without needing to increase the timeout limit. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of optimizing build performance within CodeBuild, a common trap being to simply raise the timeout value—which only masks the problem rather than solving the underlying inefficiency. The key concept here is that parallel test execution leverages CodeBuild’s ability to run multiple builds simultaneously, effectively compressing the test phase and preventing timeout failures. Remember the memory tip: “Split to sprint”—splitting tests into parallel runs lets your build finish faster, not wait longer.

DOP-C02 SDLC Automation Practice Question

This DOP-C02 practice question tests your understanding of sdlc 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 DevOps team uses AWS CodePipeline to deploy a microservices application. The pipeline includes a CodeBuild project that runs unit tests. Recently, builds have been failing intermittently due to test timeouts. The team wants to improve the reliability of the pipeline without increasing the build timeout. Which action should the team take?

Question 1mediummultiple choice

Full question →

A
Increase the build timeout to the maximum allowed value of 8 hours.
Why wrong: Increasing timeout does not fix the root cause of intermittent failures; it only postpones the timeout.
B
Use AWS CodeDeploy to run the unit tests on EC2 instances with more CPU and memory.
Why wrong: CodeDeploy is for deploying applications, not running unit tests; CodeBuild is the appropriate service.
C
Modify the unit tests to be non-flaky by adding retries for network calls.
Why wrong: While reducing flakiness is good, it does not directly address the timeout issue if tests are simply slow.
D
Configure the CodeBuild project to run tests in parallel by using separate build environments or test splits.
Running tests in parallel can reduce total test execution time, helping to avoid timeouts without changing the timeout setting.

Full breakdown with real-world context →

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

✓

Configure the CodeBuild project to run tests in parallel by using separate build environments or test splits.

Option A correctly identifies that running tests in parallel reduces overall build time and helps avoid timeouts without increasing the timeout limit. Option B increases timeout but does not address intermittent failures. Option C addresses flaky tests but does not directly solve timeout issues. Option D moves testing to CodeDeploy, which is not designed for unit testing.

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.

✗
Increase the build timeout to the maximum allowed value of 8 hours.
Why it's wrong here
Increasing timeout does not fix the root cause of intermittent failures; it only postpones the timeout.
✗
Use AWS CodeDeploy to run the unit tests on EC2 instances with more CPU and memory.
Why it's wrong here
CodeDeploy is for deploying applications, not running unit tests; CodeBuild is the appropriate service.
✗
Modify the unit tests to be non-flaky by adding retries for network calls.
Why it's wrong here
While reducing flakiness is good, it does not directly address the timeout issue if tests are simply slow.
✓
Configure the CodeBuild project to run tests in parallel by using separate build environments or test splits.
Why this is correct
Running tests in parallel can reduce total test execution time, helping to avoid timeouts without changing the timeout setting.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.

What to study next

Got this wrong? Here's your next step.

Identify which DOP-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.

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FAQ

Questions learners often ask

What does this DOP-C02 question test?

SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Configure the CodeBuild project to run tests in parallel by using separate build environments or test splits. — Option A correctly identifies that running tests in parallel reduces overall build time and helps avoid timeouts without increasing the timeout limit. Option B increases timeout but does not address intermittent failures. Option C addresses flaky tests but does not directly solve timeout issues. Option D moves testing to CodeDeploy, which is not designed for unit testing.

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

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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This DOP-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 DOP-C02 exam.