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SOA-C02 Practice Question: S3 Gateway VPC endpoint to prevent S3 traffic…
This SOA-C02 practice question tests your understanding of s3 gateway vpc endpoint to prevent s3 traffic…. 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. A key principle to apply: vPC endpoint. 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.
EC2 instances in private subnets need to access S3 buckets. Currently the instances use a NAT Gateway to reach S3 over the internet. The team wants to keep S3 traffic private (within the AWS network) and reduce NAT Gateway data processing costs. What is the correct solution?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Add a route in the private subnet's route table directing all traffic (0.0.0.0/0) to an Internet Gateway
An Internet Gateway routes traffic to the public internet. Private subnets intentionally do not have Internet Gateway routes. Adding one would make the subnet public, exposing the instances directly to the internet.
B
Distractor review
Use S3 Transfer Acceleration to route traffic over AWS edge locations instead of NAT
S3 Transfer Acceleration uses CloudFront edge locations to accelerate uploads from clients over the internet by routing through the nearest AWS edge. It does not prevent traffic from traversing the internet — it actually uses the internet as the ingress path to the edge. It also adds cost per GB.
C
Best answer
Create an S3 Gateway VPC endpoint and add it to the private subnet's route table; S3 traffic will bypass the NAT Gateway
After the Gateway endpoint is created and the route table updated, the AWS networking layer automatically routes S3 API calls from instances in those subnets through the private endpoint path. The NAT Gateway processes zero S3 bytes, eliminating the per-GB data processing cost for S3 traffic. No code changes are required.
D
Distractor review
Create an S3 Interface VPC endpoint in the private subnet to route S3 traffic privately
S3 Interface endpoints (PrivateLink) assign private IP addresses in the subnet and use ENIs. They incur an hourly endpoint cost and per-GB data processing charge. For the goal of reducing cost, the Gateway endpoint (free) is the correct choice. Interface endpoints are used when DNS resolution to private IPs is required (e.g., on-premises access via Direct Connect).
Common exam trap
Common exam trap: answer the scenario, not the keyword
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.
Technical deep dive
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- VPC endpoint
- S3 Gateway endpoint
- private S3 access
- route table
- no NAT Gateway required
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
VPC endpoint
Related practice questions
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More questions from this exam
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Question 1
A company uses Amazon CloudFront to deliver content to a global audience. The origin is an Application Load Balancer in us-east-1. The SysOps administrator wants to reduce costs by minimizing the number of requests that reach the origin server. Which action should the administrator take?
Question 2
A company runs a batch processing application on Amazon EC2 that runs for 2 hours every night. The workload can tolerate interruptions. Which EC2 purchasing option provides the lowest cost for this use case?
Question 3
A SysOps administrator needs to monitor the CPU utilization of an Amazon RDS DB instance and receive an alarm when CPU utilization exceeds 80% for 5 consecutive minutes. Which AWS service should be used to create this alarm?
Question 4
A company runs a critical web application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). The application uses session stickiness (sticky sessions) to maintain user sessions. The SysOps administrator notices that when instances are replaced during a scale-in or failure event, users lose their session data. The administrator needs to preserve session data across instance failures without losing stickiness benefits. What should the administrator do?
Question 5
A company runs a production web application on a single Amazon EC2 instance. The application experiences a predictable and steady workload 24/7. The SysOps administrator wants to minimize compute costs for this instance while ensuring it remains available during the expected workload. Which EC2 purchasing option should the administrator use?
Question 6
A company has a VPC with public and private subnets. The private subnets host application servers that need to make outbound HTTPS connections to the internet. The SysOps administrator must implement a solution that provides outbound internet connectivity while preventing inbound connections from the internet. Additionally, the solution must allow the company to control which domains the application servers can access. Which solution should the administrator implement?
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
VPC endpoint
What is the correct answer to this question?
The correct answer is: Create an S3 Gateway VPC endpoint and add it to the private subnet's route table; S3 traffic will bypass the NAT Gateway — An S3 Gateway VPC endpoint creates a logical connection between the VPC and S3 that routes traffic directly through the AWS network without traversing the public internet or passing through a NAT Gateway. A route table entry is added to the private subnet's route table directing S3-bound traffic (the S3 prefix list) to the VPC endpoint. S3 Gateway endpoints have no hourly cost and no per-GB processing charge — all S3 traffic from the VPC routes free of NAT Gateway charges. No changes to application code or bucket policies are required (unless the bucket policy restricts access to specific VPC endpoints).
What should I do if I get this SOA-C02 question wrong?
Review vPC endpoint, then practise related SOA-C02 questions on the same topic to reinforce the concept.
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