- A
CODEBUILD_SRC_DIR
This is automatically set to the source directory.
- B
AWS_REGION
Why wrong: AWS_REGION is automatically set by the AWS CLI, but not specifically by CodeBuild.
- C
CODEBUILD_BUILD_ID
This is automatically set to the build ID.
- D
CODEBUILD_BUILD_NUMBER
Why wrong: This is not automatically set; it is a user-defined variable.
- E
CI
Why wrong: CI is not automatically set by CodeBuild.
Question 116 of 1,750
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 company uses AWS CodeBuild to run unit tests. The buildspec.yaml file includes commands to install dependencies and run tests. Which TWO environment variables are automatically set by CodeBuild and can be used in the build commands? (Choose TWO.)
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
✓
CODEBUILD_SRC_DIR
A is correct because `CODEBUILD_SRC_DIR` is an environment variable automatically set by AWS CodeBuild that contains the absolute path to the directory where the source code is downloaded. This variable is essential for build commands that need to reference the source root, such as running tests or installing dependencies from a relative path.
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.
- ✓
CODEBUILD_SRC_DIR
Why this is correct
This is automatically set to the source directory.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS_REGION
Why it's wrong here
AWS_REGION is automatically set by the AWS CLI, but not specifically by CodeBuild.
- ✓
CODEBUILD_BUILD_ID
Why this is correct
This is automatically set to the build ID.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
CODEBUILD_BUILD_NUMBER
Why it's wrong here
This is not automatically set; it is a user-defined variable.
- ✗
CI
Why it's wrong here
CI is not automatically set by CodeBuild.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse `CODEBUILD_BUILD_NUMBER` with `CODEBUILD_BUILD_ID` or assume that common CI environment variables like `CI` or `AWS_REGION` are automatically set by CodeBuild, when in fact they are not.
Detailed technical explanation
How to think about this question
Under the hood, CodeBuild injects environment variables like `CODEBUILD_SRC_DIR` and `CODEBUILD_BUILD_ID` into the build container's environment before executing the phases defined in buildspec.yaml. `CODEBUILD_BUILD_ID` is a unique string in the format `project-name:build-id` and is useful for tagging artifacts or logging. A subtle behavior is that `CODEBUILD_SRC_DIR` points to the root of the source code even when using multiple source providers, but it does not include submodules unless explicitly cloned.
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 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: CODEBUILD_SRC_DIR — A is correct because `CODEBUILD_SRC_DIR` is an environment variable automatically set by AWS CodeBuild that contains the absolute path to the directory where the source code is downloaded. This variable is essential for build commands that need to reference the source root, such as running tests or installing dependencies from a relative path.
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.
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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