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Question 966 of 1,750

SDLC Automation →mediumMultiple ChoiceObjective-mapped

DOP-C02 SDLC Automation Practice Question

This DOP-C02 practice question tests your understanding of sdlc automation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 development team uses AWS CodeBuild to compile a Java application. The build takes 15 minutes on average, but recently it started taking over 30 minutes. The buildspec.yml file is unchanged. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The cache for the build project was cleared, forcing a full dependency download.
Clearing the cache means all dependencies must be downloaded again, increasing build time.
B
The build environment was changed from a Linux to a Windows environment.
Why wrong: Environment type change would require a new build project, not just time increase.
C
The build project's compute type was downgraded to a smaller instance.
Why wrong: This would be a known change; the question says the buildspec is unchanged, but compute type could have been changed inadvertently.
D
The buildspec.yml file was updated to include more build commands.
Why wrong: The problem states the buildspec is unchanged.

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

✓

The cache for the build project was cleared, forcing a full dependency download.

The most likely cause is that the build project's cache was cleared, forcing a full dependency download. CodeBuild can cache dependencies (e.g., Maven local repository) to speed up builds. If the cache is invalidated or cleared, the build must re-download all dependencies from the internet, significantly increasing build time from 15 minutes to over 30 minutes, even though the buildspec.yml is unchanged.

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.

✓
The cache for the build project was cleared, forcing a full dependency download.
Why this is correct
Clearing the cache means all dependencies must be downloaded again, increasing build time.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The build environment was changed from a Linux to a Windows environment.
Why it's wrong here
Environment type change would require a new build project, not just time increase.
✗
The build project's compute type was downgraded to a smaller instance.
Why it's wrong here
This would be a known change; the question says the buildspec is unchanged, but compute type could have been changed inadvertently.
✗
The buildspec.yml file was updated to include more build commands.
Why it's wrong here
The problem states the buildspec is unchanged.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may assume a compute type downgrade is the cause, but the sudden change in build time without any configuration change points to cache invalidation, not a gradual performance degradation.

Detailed technical explanation

How to think about this question

CodeBuild uses a local cache stored in an S3 bucket (specified by the 'cache' type in the project configuration). When the cache is cleared or expires, Maven/Gradle must re-resolve all dependencies from remote repositories (e.g., Maven Central), which can take 10–20 minutes depending on network latency and dependency count. The cache can be cleared manually, via lifecycle policies on the S3 bucket, or if the cache key changes (e.g., due to a change in the build project's environment image).

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

An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.

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 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: The cache for the build project was cleared, forcing a full dependency download. — The most likely cause is that the build project's cache was cleared, forcing a full dependency download. CodeBuild can cache dependencies (e.g., Maven local repository) to speed up builds. If the cache is invalidated or cleared, the build must re-download all dependencies from the internet, significantly increasing build time from 15 minutes to over 30 minutes, even though the buildspec.yml is unchanged.

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

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

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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