ANS-C01 Network Management and Operations Practice Question
Exhibit
Refer to the exhibit.
```
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "delivery.logs.amazonaws.com"
},
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::my-flow-logs-bucket/AWSLogs/*",
"Condition": {
"ArnLike": {
"aws:SourceArn": "arn:aws:logs:us-east-1:123456789012:*"
}
}
}
]
}
```A network engineer is configuring VPC Flow Logs to deliver to an S3 bucket in a different account. The bucket policy is shown. The flow logs are not being delivered. What is the most likely reason?
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 aws:SourceArn condition restricts access to a specific account, but the flow logs are from a different account
The bucket policy uses the log delivery service principal from account 123456789012, but the flow logs are from a different account. The policy needs to allow access for the source account's log delivery service. Option A is incorrect because the action is correct. Option B is incorrect because the resource includes the full path. Option D is incorrect because the Principal is correct for cross-account delivery.
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 Action should be s3:PutObjectAcl instead of s3:PutObject
Why it's wrong here
s3:PutObject is the correct action.
- ✗
The Principal must be the destination account's log delivery service
Why it's wrong here
The source account's log delivery service should be the principal.
- ✓
The aws:SourceArn condition restricts access to a specific account, but the flow logs are from a different account
Why this is correct
The condition limits access to logs from account 123456789012 only.
- ✗
The Resource does not include the bucket ARN itself
Why it's wrong here
The resource includes the prefix, which is sufficient.
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 ANS-C01 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 ANS-C01 exam.