DOP-C02 SDLC Automation Practice Question
Exhibit
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:GetObject",
"s3:PutObject"
],
"Resource": "arn:aws:s3:::my-codepipeline-bucket/*"
},
{
"Effect": "Allow",
"Action": [
"codebuild:StartBuild",
"codebuild:BatchGetBuilds"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Action": "iam:PassRole",
"Resource": "arn:aws:iam::123456789012:role/CodeBuildServiceRole",
"Condition": {
"StringEquals": {
"iam:PassedToService": "codebuild.amazonaws.com"
}
}
}
]
}Refer to the exhibit. An IAM policy is attached to a CodePipeline service role. When the pipeline tries to start a CodeBuild project, it fails with an 'AccessDenied' error. The CodeBuild project uses a different service role (arn:aws:iam::123456789012:role/CodeBuildServiceRole2). What is the MOST likely cause?
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 policy only allows iam:PassRole for a specific role ARN, but the CodeBuild project uses a different role.
The pipeline's service role has an iam:PassRole action constrained to a specific role ARN via a condition key. When the pipeline attempts to start the CodeBuild project, it needs to pass the CodeBuild service role (arn:aws:iam::123456789012:role/CodeBuildServiceRole2) to CodeBuild. Because the policy only allows iam:PassRole for a different role (not this one), the pass fails, resulting in an AccessDenied error. Option D correctly identifies this issue.
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 policy has a condition on the s3 actions that is not satisfied.
Why it's wrong here
No condition on s3 actions.
- ✗
The policy does not allow codebuild:StartBuild for the specific project.
Why it's wrong here
The policy allows codebuild:StartBuild on all resources.
- ✗
The policy does not allow s3:GetObject on the artifact bucket.
Why it's wrong here
It does allow s3:GetObject on the bucket.
- ✓
The policy only allows iam:PassRole for a specific role ARN, but the CodeBuild project uses a different role.
Why this is correct
The PassRole action is restricted to a specific role ARN.
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