This ANS-C01 practice question tests your understanding of network design. 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 provide secure access to an S3 bucket from a VPC without using an internet gateway or NAT device. Which AWS feature should be used?
Internet gateway
Why wrong: Internet gateway exposes traffic to the internet.
NAT gateway
Why wrong: NAT gateway requires an internet gateway.
AWS Site-to-Site VPN connection
Why wrong: VPN connects to on-premises networks.
VPC endpoint (Gateway type) for S3
A Gateway VPC endpoint provides private access to S3.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
VPC endpoint (Gateway type) for S3
A VPC endpoint (Gateway type) for S3 allows instances within a VPC to access S3 buckets privately using the AWS network, without requiring an internet gateway or NAT device. This is achieved by adding an endpoint route in the VPC route table that directs S3 traffic through the AWS backbone, ensuring data never traverses the public internet.
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.
Internet gateway
Why it's wrong here
Internet gateway exposes traffic to the internet.
NAT gateway
AWS Site-to-Site VPN connection
Why it's wrong here
VPN connects to on-premises networks.
VPC endpoint (Gateway type) for S3
Why this is correct
A Gateway VPC endpoint provides private access to S3.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
AWS often tests the misconception that a NAT gateway alone provides private S3 access, but candidates must remember that NAT gateways still require an internet gateway and do not eliminate internet transit for S3 traffic.
Detailed technical explanation
A Gateway VPC endpoint for S3 uses a prefix list in the VPC route table to route traffic destined for S3’s public IP ranges through the AWS private network, bypassing the internet. The endpoint is horizontally scaled, redundant, and highly available by default, and it supports policies to control access at the endpoint level. In real-world scenarios, this is critical for workloads like data lakes or backup pipelines that must avoid data transfer costs and latency of internet-based paths.
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.
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FAQ
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
The correct answer is: VPC endpoint (Gateway type) for S3 — A VPC endpoint (Gateway type) for S3 allows instances within a VPC to access S3 buckets privately using the AWS network, without requiring an internet gateway or NAT device. This is achieved by adding an endpoint route in the VPC route table that directs S3 traffic through the AWS backbone, ensuring data never traverses the public internet.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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