Exam AWS Certified SysOps Administrator - Associate topic 1 question 285 discussion

Options B, D, and E are not relevant to the CloudFormation stack creation failure for an S3 bucket. Option B is related to CloudFormation StackSets, not individual stacks. Option D and E are related to specific S3 bucket actions (list and put) and are not directly related to the stack creation process. Therefore, the correct answers are A and C.

The failure of the CloudFormation stack creation can be due to several factors related to IAM policies and S3 bucket permissions. Let's go through the options: A. The user’s IAM policy does not allow the cloudformation:CreateStack action. This could definitely cause the stack creation to fail, as the user needs permission to create CloudFormation stacks. B. The user’s IAM policy does not allow the cloudformation:CreateStackSet action. This action is related to stack sets, not individual stacks. Since the question is about stack creation, this is less likely to be the cause of the failure. C. The user’s IAM policy does not allow the s3:CreateBucket action. This is a crucial permission because the CloudFormation template is creating an S3 bucket. If the user doesn't have permission to create S3 buckets, the stack creation will fail.

Options B, D, and E are less likely to be directly related to the failure of stack creation: B. The user’s IAM policy does not allow the cloudformation:CreateStackSet action. Stack sets are generally used for deploying stacks across multiple accounts and regions, and it might not be directly related to a stack creation failure in a single account. D. The user’s IAM policy explicitly denies the s3:ListBucket action. While s3:ListBucket is needed for some S3 operations, it's not necessarily required for creating an S3 bucket. E. The user’s IAM policy explicitly denies the s3:PutObject action. Denying s3:PutObject would prevent the user from uploading objects to an existing S3 bucket. It's not a direct factor for creating a new S3 bucket.