- A
Use a VPC endpoint with a bucket policy that restricts access to the VPC endpoint.
Why wrong: This would restrict access to traffic from within the VPC, not the corporate network (unless the corporate network is connected to the VPC via VPN/Direct Connect).
- B
Use an IAM policy that restricts access to the corporate IP range and enable default encryption on the bucket.
Why wrong: IAM policies cannot restrict access based on source IP for S3 bucket operations; bucket policies are needed for IP-based restrictions.
- C
Bucket policy with a condition that denies access unless the source IP is within the corporate range, and require HTTPS for all requests.
A bucket policy with a condition using aws:SourceIp can restrict access to the corporate IP range. Requiring HTTPS ensures encryption in transit.
- D
Enable CloudFront with geographic restrictions and use HTTPS.
Why wrong: Geographic restrictions are based on country, not specific IP ranges.
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. 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.
A company wants to restrict access to their S3 bucket so that only users from their corporate network (with a specific IP range) can read objects. They also want to ensure that the objects are encrypted in transit. Which combination of bucket policy and encryption should they use?
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
Bucket policy with a condition that denies access unless the source IP is within the corporate range, and require HTTPS for all requests.
Option C is correct because a bucket policy with a condition key `aws:SourceIp` can restrict access to the corporate IP range, and requiring HTTPS (via a `aws:SecureTransport` condition) ensures encryption in transit. This combination directly meets both requirements without relying on additional infrastructure like VPC endpoints or CloudFront.
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.
- ✗
Use a VPC endpoint with a bucket policy that restricts access to the VPC endpoint.
Why it's wrong here
This would restrict access to traffic from within the VPC, not the corporate network (unless the corporate network is connected to the VPC via VPN/Direct Connect).
- ✗
Use an IAM policy that restricts access to the corporate IP range and enable default encryption on the bucket.
Why it's wrong here
IAM policies cannot restrict access based on source IP for S3 bucket operations; bucket policies are needed for IP-based restrictions.
- ✓
Bucket policy with a condition that denies access unless the source IP is within the corporate range, and require HTTPS for all requests.
Why this is correct
A bucket policy with a condition using aws:SourceIp can restrict access to the corporate IP range. Requiring HTTPS ensures encryption in transit.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable CloudFront with geographic restrictions and use HTTPS.
Why it's wrong here
Geographic restrictions are based on country, not specific IP ranges.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the distinction between IAM policies (which control user permissions) and bucket policies (which control resource-based access), leading candidates to incorrectly choose an IAM policy for IP-based restrictions.
Detailed technical explanation
How to think about this question
The `aws:SourceIp` condition key in an S3 bucket policy evaluates the source IP address of the request, which must match the corporate CIDR range. The `aws:SecureTransport` condition key denies requests that are not sent over HTTPS (port 443), ensuring TLS encryption in transit. Under the hood, S3 bucket policies are evaluated before any IAM policies, making them the correct place for network-level restrictions.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
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Network Security, Compliance and Governance — study guide chapter
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Bucket policy with a condition that denies access unless the source IP is within the corporate range, and require HTTPS for all requests. — Option C is correct because a bucket policy with a condition key `aws:SourceIp` can restrict access to the corporate IP range, and requiring HTTPS (via a `aws:SecureTransport` condition) ensures encryption in transit. This combination directly meets both requirements without relying on additional infrastructure like VPC endpoints or CloudFront.
What should I do if I get this ANS-C01 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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Last reviewed: Jun 30, 2026
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.
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