SCS-C02 Security Logging and Monitoring Practice Question
Exhibit
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "cloudtrail.amazonaws.com"
},
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::my-trail-bucket/AWSLogs/123456789012/*",
"Condition": {
"StringEquals": {
"s3:x-amz-acl": "bucket-owner-full-control"
}
}
},
{
"Effect": "Allow",
"Principal": {
"Service": "cloudtrail.amazonaws.com"
},
"Action": "s3:GetBucketAcl",
"Resource": "arn:aws:s3:::my-trail-bucket"
}
]
}Refer to the exhibit. A security engineer configured this S3 bucket policy for CloudTrail, but CloudTrail logs are not being delivered. What is the MOST likely missing permission?
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
✓
Missing s3:PutObject permission for the bucket.
CloudTrail requires that the S3 bucket policy grants the s3:PutObject permission to the CloudTrail service principal to write log files. The exhibit shows a bucket policy that grants s3:GetBucketAcl but is missing a statement that allows s3:PutObject on the bucket (or on the appropriate log prefix). Without s3:PutObject, CloudTrail cannot deliver log files to the bucket. Therefore, the most likely missing permission is s3:PutObject for the bucket, making option C correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Missing s3:GetBucketAcl permission.
Why it's wrong here
The policy already includes s3:GetBucketAcl.
- ✗
The condition StringEquals should be StringLike.
Why it's wrong here
StringEquals is correct for this condition.
- ✓
Missing s3:PutObject permission for the bucket.
Why this is correct
CloudTrail also requires s3:PutObject on the bucket ARN to write log files, not just the prefix.
- ✗
The bucket ARN is incorrect.
Why it's wrong here
The bucket ARN is correctly formatted.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SCS-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SCS-C02 exam.