Question 391 of 1,621
ANS-C01 Network Implementation Practice Question
A company has a VPC with multiple subnets. An EC2 instance in a private subnet needs to access an S3 bucket to download files. The company wants to avoid using a NAT gateway and minimize latency. Which solution should be used?
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that a NAT gateway is required for private subnet internet access, but the trap here is that S3 can be accessed via a VPC endpoint without any internet gateway or NAT, and candidates may confuse VPC endpoints for S3 with those for other services like EC2 or DynamoDB.
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 endpoint for S3 and attach it to the private subnet's route table.
A VPC endpoint for S3 allows the EC2 instance in the private subnet to access S3 directly over the AWS network, avoiding internet-bound traffic and eliminating the need for a NAT gateway. This minimizes latency because traffic stays within the AWS backbone and does not traverse the public internet. Attaching the endpoint to the private subnet's route table ensures that S3-bound traffic is routed through the endpoint.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create a VPC endpoint for S3 and attach it to the private subnet's route table.
Why this is correct
Provides private, low-latency access to S3.
- ✗
Place the instance in a public subnet and use a NAT gateway.
Why it's wrong here
Adds latency and requires public IP.
- ✗
Use a VPC endpoint for EC2.
Why it's wrong here
EC2 endpoints don't exist; S3 endpoints are needed.
- ✗
Use an internet gateway and a route to 0.0.0.0/0.
Why it's wrong here
Would require public IP and is less secure.
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 |
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.