hardMultiple ChoiceObjective-mapped
CRISC Practice Question: Refer to the exhibit
Exhibit
{
"PolicyName": "S3BucketAccessMonitor",
"Rules": [
{
"Effect": "Deny",
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::critical-data/*",
"Condition": {"IpAddress": {"aws:SourceIp": "10.0.0.0/8"}}
},
{
"Effect": "Allow",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::critical-data/*",
"Condition": {"IpAddress": {"aws:SourceIp": "10.0.0.0/8"}}
}
]
}Refer to the exhibit. This JSON snippet defines a monitoring policy for S3 bucket access. Which of the following is a potential risk that might NOT be detected by this monitoring policy?
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
✓
Unauthorized DELETE operations from any IP.
The monitoring policy only covers PutObject and GetObject actions. DeleteObject is not included, so unauthorized DELETE operations would go undetected. Option A (GET from trusted IP) is monitored, as GetObject is covered. Option B (PUT from trusted IP) is also monitored because PutObject is covered; if the policy denies such PUTs, that would still be detected by the monitoring. Option D (PUT from outside trusted IP) is likewise monitored. Only DELETE actions are completely outside the monitoring scope.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Unauthorized GET operations from within the trusted IP range.
Why it's wrong here
GET operations from trusted IP are allowed by the policy, so they are not unauthorized.
- ✗
Unauthorized PUT operations from within the trusted IP range.
Why it's wrong here
PUT from trusted IP is denied, so it is monitored and blocked.
- ✓
Unauthorized DELETE operations from any IP.
Why this is correct
DELETE operations are not covered by the policy at all, so they would not be monitored.
- ✗
Unauthorized PUT operations from outside the trusted IP range.
Why it's wrong here
The policy does not explicitly allow or deny outside IPs, but it's not a monitoring deficiency; rule only applies to trusted IPs. However, the risk manager may rely on network controls; this is less clear than C.
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 CRISC practice question is part of Courseiva's free ISACA 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 CRISC exam.