Quick Answer
The correct answer is to use the `aws:SourceVpce` condition key, which restricts access to a specific VPC endpoint ID, and the `aws:SourceVpc` condition key, which restricts access to requests originating from a specific VPC. These two conditions work together because `aws:SourceVpce` ensures the traffic came through your designated endpoint, while `aws:SourceVpc` provides a broader but still secure restriction to the entire VPC, preventing access from the public internet or other networks. On the AWS Certified Security Specialty SCS-C02 exam, this concept tests your understanding of VPC endpoint policies and the critical difference between source IP-based conditions (which do not work with VPC endpoints) and VPC-specific condition keys. A common trap is confusing `aws:SourceIp` with VPC endpoint traffic—remember that traffic through a VPC endpoint replaces the original source IP with the endpoint’s private IP, making IP-based conditions ineffective. Memory tip: "VPCE = Endpoint, VPC = Virtual Private Cloud; both start with 'V' and are for network-level restrictions, not IP."
This SCS-C02 practice question tests your understanding of identity and access management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 security engineer needs to restrict access to an S3 bucket so that only requests from a specific VPC endpoint are allowed. Which TWO conditions must be configured?
aws:SourceIp
Why wrong: Not used with VPC endpoints; VPC endpoints use source VPC conditions.
aws:UserAgent
Why wrong: User agent is for client identification, not VPC restriction.
aws:SourceVpce
Restricts to a specific VPC endpoint ID.
aws:SourceVpc
Restricts to a specific VPC.
aws:Referer
Why wrong: Referer is for HTTP referrer, not VPC restriction.
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:SourceVpce
Option A and C are correct because aws:SourceVpce restricts to a specific VPC endpoint, and aws:SourceVpc restricts to a specific VPC. Option B is wrong because aws:SourceIp is not applicable for VPC endpoint. Option D is wrong because aws:UserAgent is not relevant. Option E is wrong because aws:Referer is not relevant.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
aws:SourceIp
Why it's wrong here
Not used with VPC endpoints; VPC endpoints use source VPC conditions.
aws:UserAgent
Why it's wrong here
User agent is for client identification, not VPC restriction.
aws:SourceVpce
Why this is correct
Restricts to a specific VPC endpoint ID.
Related concept
Read the scenario before looking for a memorised answer.
aws:SourceVpc
Why this is correct
Restricts to a specific VPC.
Related concept
Read the scenario before looking for a memorised answer.
aws:Referer
Why it's wrong here
Referer is for HTTP referrer, not VPC restriction.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
Identify which SCS-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Identity and Access Management — study guide chapter
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Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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FAQ
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
The correct answer is: aws:SourceVpce — Option A and C are correct because aws:SourceVpce restricts to a specific VPC endpoint, and aws:SourceVpc restricts to a specific VPC. Option B is wrong because aws:SourceIp is not applicable for VPC endpoint. Option D is wrong because aws:UserAgent is not relevant. Option E is wrong because aws:Referer is not relevant.
Identify which SCS-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A security engineer needs to restrict access to an S3 bucket so that only requests from a specific VPC are allowed. Which TWO steps are required?
mediumWhy A: Options B and D are correct. B: Create a VPC endpoint for S3 and attach it to the VPC. D: Add a bucket policy that denies access unless the request comes from the VPC endpoint. Option A is wrong because a bucket policy can reference the VPC endpoint. Option C is wrong because a VPC endpoint policy is not required; the bucket policy can enforce the condition. Option E is wrong because bucket policies do not have condition keys for VPC ID directly.
Last reviewed: Jun 20, 2026
This SCS-C02 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 SCS-C02 exam.
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