ANS-C01 Network Implementation Practice Question
A company wants to allow an EC2 instance in a private subnet to download files from an S3 bucket without traversing the internet. Which AWS service should be used?
⚠ Common exam trap
The ANS-C01 exam often tests the distinction between Gateway Endpoints and Interface Endpoints, where candidates mistakenly choose Interface Endpoint for S3 because they confuse it with services like DynamoDB or API Gateway, or assume all AWS services use the same endpoint type.
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
✓
Create a VPC Gateway Endpoint for S3.
A VPC Gateway Endpoint for S3 allows instances in a private subnet to access S3 without traversing the internet by routing traffic through AWS's internal network. It uses prefix lists and route table entries to direct S3 traffic to the endpoint, avoiding the need for NAT gateways or internet gateways.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Establish an AWS Direct Connect connection to the VPC.
Why it's wrong here
Overkill and expensive for S3 access; also requires on-premises.
- ✗
Attach an internet gateway and route through a NAT gateway.
Why it's wrong here
Uses internet, not private.
- ✗
Create a VPC Interface Endpoint for S3.
Why it's wrong here
Interface Endpoint is not supported for S3; only Gateway Endpoint.
- ✓
Create a VPC Gateway Endpoint for S3.
Why this is correct
Gateway Endpoint provides private connectivity to S3 without internet.
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.