ANS-C01 Network Design Practice Question
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?
⚠ Common exam trap
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.
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
✓
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.
Answer analysis
Option-by-option breakdown
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
Why it's wrong here
NAT gateway requires an internet 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.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.