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Question 1,397 of 1,750

SDLC Automation →hardMultiple ChoiceObjective-mapped

Resolving 'No such file or directory' Error in AWS CodeBuild Due to Incorrect Path in buildspec.yaml

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 engineer is troubleshooting a CodePipeline that has a Build stage using AWS CodeBuild. The build logs show 'Error: No such file or directory' for a file that is present in the source repository. 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 buildspec.yaml specifies an incorrect path for the file relative to the source root.
The build process runs from the source root; incorrect relative paths cause file not found errors.
B
The build commands are not executed because the pre_build phase failed.
Why wrong: The error is about a missing file, not a phase failure.
C
The artifact definition in the buildspec.yaml is incorrect.
Why wrong: Artifact definitions affect output, not input files.
D
The environment variables in CodeBuild are not set correctly.
Why wrong: Environment variables do not cause file not found errors.

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 buildspec.yaml specifies an incorrect path for the file relative to the source root.

The error 'No such file or directory' indicates that the build process is attempting to access a file at a path that does not exist relative to the source root. In AWS CodeBuild, the build runs in a temporary directory that contains the source code, and all paths in the buildspec.yaml are relative to the source root by default. If the buildspec.yaml specifies an incorrect relative path (e.g., using an absolute path or a wrong subdirectory), CodeBuild will fail to locate the file, even though it exists in the repository.

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 buildspec.yaml specifies an incorrect path for the file relative to the source root.
Why this is correct
The build process runs from the source root; incorrect relative paths cause file not found errors.
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 commands are not executed because the pre_build phase failed.
Why it's wrong here
The error is about a missing file, not a phase failure.
✗
The artifact definition in the buildspec.yaml is incorrect.
Why it's wrong here
Artifact definitions affect output, not input files.
✗
The environment variables in CodeBuild are not set correctly.
Why it's wrong here
Environment variables do not cause file not found errors.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse file path errors with environment variable misconfiguration or artifact issues, but the root cause is almost always a path mismatch in the buildspec.yaml relative to the source root.

Trap categories for this question

Command / output trap
Artifact definitions affect output, not input files.

Detailed technical explanation

How to think about this question

Under the hood, CodeBuild clones the source repository into a directory like /codebuild/output/src<hash>/src, and the buildspec.yaml is processed from the root of that directory. If the buildspec.yaml references a file with a path like './scripts/build.sh' but the file is actually in 'src/scripts/build.sh', the relative path mismatch causes the OS-level 'No such file or directory' error. This is a common issue when the source repository has a non-standard structure or when the buildspec.yaml is placed in a subdirectory without adjusting the 'buildspec' override path in the CodeBuild project configuration.

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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

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 buildspec.yaml specifies an incorrect path for the file relative to the source root. — The error 'No such file or directory' indicates that the build process is attempting to access a file at a path that does not exist relative to the source root. In AWS CodeBuild, the build runs in a temporary directory that contains the source code, and all paths in the buildspec.yaml are relative to the source root by default. If the buildspec.yaml specifies an incorrect relative path (e.g., using an absolute path or a wrong subdirectory), CodeBuild will fail to locate the file, even though it exists in the repository.

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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