The correct answer is that the policy allows authenticated users from the internal network (10.0.0.0/8) to perform PutObject (write) to the S3 bucket. This is because the policy statement sets the principal to "*" for any authenticated user, but then applies a condition using the `aws:SourceIp` key to restrict the `s3:PutObject` action exclusively to the 10.0.0.0/8 IP range, effectively combining authentication with network-level access control. On the CRISC exam, this scenario tests your ability to interpret how IAM policy conditions enforce risk controls, specifically how an S3 bucket policy IP restriction for authenticated users can limit data exposure even when the principal is broad. A common trap is assuming the wildcard principal allows anonymous access, but the condition key overrides that—only authenticated requests from the allowed IP range succeed. Memory tip: think "Auth + IP = Write only," meaning the policy permits writes but explicitly denies reads (no GetObject), so always check which actions are listed under Effect: Allow.
CRISC IT Risk Identification Practice Question
This CRISC practice question tests your understanding of it risk identification. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
=== AWS IAM Policy (JSON) ===
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::company-data/*",
"Condition": {
"IpAddress": {
"aws:SourceIp": "10.0.0.0/8"
}
}
}
]
}
=== End of Policy ===
Refer to the exhibit. A risk manager is reviewing IAM policies for an S3 bucket used for sensitive data. This policy allows which of the following?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Users from the internal network (10.0.0.0/8) to write (PutObject) to the bucket
Option C is correct because the policy statement includes a condition that restricts the s3:PutObject action to requests originating from the 10.0.0.0/8 IP range, and the principal is set to '*' (any authenticated user), meaning only authenticated users from the internal network can write to the bucket. The policy does not grant GetObject permissions, so reads are not allowed.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Any user to read (GetObject) from the bucket
Why it's wrong here
Action is PutObject, not GetObject.
✗
Any user to write (PutObject) to the bucket from any IP address
Why it's wrong here
Condition restricts to 10.0.0.0/8 IP range.
✓
Users from the internal network (10.0.0.0/8) to write (PutObject) to the bucket
Why this is correct
The policy allows PutObject only from internal IPs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Users from the internal network to read (GetObject) from the bucket
Why it's wrong here
Action is PutObject, not GetObject.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a policy with 'Principal': '*' allows anonymous access, but in S3 bucket policies, '*' means any authenticated AWS user unless the policy explicitly includes a 'NotPrincipal' or the bucket is configured for public access; additionally, the condition on source IP is easy to overlook, leading to the mistaken belief that writes are allowed from any IP.
Detailed technical explanation
How to think about this question
AWS S3 bucket policies use the 'Principal' element to specify who is allowed access; when set to '*' it means any authenticated AWS user, not anonymous users. The 'Condition' block with 'IpAddress' and 'aws:SourceIp' evaluates the source IP of the request, and if it does not match the specified CIDR, the policy denies the action. This is a common pattern for restricting sensitive S3 buckets to corporate network ranges while still requiring AWS authentication.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
IT Risk Identification — This question tests IT Risk Identification — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Users from the internal network (10.0.0.0/8) to write (PutObject) to the bucket — Option C is correct because the policy statement includes a condition that restricts the s3:PutObject action to requests originating from the 10.0.0.0/8 IP range, and the principal is set to '*' (any authenticated user), meaning only authenticated users from the internal network can write to the bucket. The policy does not grant GetObject permissions, so reads are not allowed.
What should I do if I get this CRISC question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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