This DEA-C01 practice question tests your understanding of data security 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 data engineer is configuring S3 bucket policies to restrict access to a specific VPC. Which condition key should be used in the bucket policy to enforce that requests originate only from the desired VPC?
aws:VpcSourceIp
Why wrong: aws:VpcSourceIp is not a valid condition key.
aws:SourceVpc
aws:SourceVpc restricts requests to a specific VPC.
aws:RequestedRegion
Why wrong: aws:RequestedRegion restricts by AWS region.
aws:SourceIp
Why wrong: aws:SourceIp restricts by IP address, not VPC.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
aws:SourceVpc
Option C is correct because aws:SourceVpc is the condition key used to restrict access to a specific VPC. Option A is wrong because aws:SourceIp is for IP addresses. Option B is wrong because aws:VpcSourceIp is not a valid key. Option D is wrong because aws:RequestedRegion is for region restriction.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
aws:VpcSourceIp
Why it's wrong here
aws:VpcSourceIp is not a valid condition key.
aws:SourceVpc
Why this is correct
aws:SourceVpc restricts requests to a specific VPC.
Related concept
Static NAT maps one inside address to one outside address.
aws:RequestedRegion
Why it's wrong here
aws:RequestedRegion restricts by AWS region.
aws:SourceIp
Why it's wrong here
aws:SourceIp restricts by IP address, not VPC.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
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FAQ
Data Security and Governance — This question tests Data Security and Governance — Static NAT maps one inside address to one outside address..
The correct answer is: aws:SourceVpc — Option C is correct because aws:SourceVpc is the condition key used to restrict access to a specific VPC. Option A is wrong because aws:SourceIp is for IP addresses. Option B is wrong because aws:VpcSourceIp is not a valid key. Option D is wrong because aws:RequestedRegion is for region restriction.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
This DEA-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 DEA-C01 exam.
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