An architect is designing a VPC with a public subnet for web servers and a private subnet for databases. The database instances need to download security updates from the internet without being reachable from the internet. How should this be implemented?

Direct Answer (Verified)Reviewed by Sunny (Senior Cloud Engineer)

Correct Answer: Deploy a NAT Gateway in the public subnet and update the private subnet's route table to point 0.0.0.0/0 to the NAT Gateway

NAT (Network Address Translation) Gateways allow private instances to initiate outbound connections to the internet while blocking unsolicited inbound connections....

📋Part of AWS Certified Solutions Architect – Associate (SAA-C03) · AWS Certification Practice
Real Exam ScenarioAmazon VPC

An architect is designing a VPC with a public subnet for web servers and a private subnet for databases. The database instances need to download security updates from the internet without being reachable from the internet. How should this be implemented?

✓ Correct Answer & ExplanationAmazon VPC

Correct Answer

Deploy a NAT Gateway in the public subnet and update the private subnet's route table to point 0.0.0.0/0 to the NAT Gateway

Why This Answer Is Correct

NAT (Network Address Translation) Gateways allow private instances to initiate outbound connections to the internet while blocking unsolicited inbound connections.

📚 What This Question Tests

This question evaluates your knowledge of Amazon VPC — a core concept tested in AWS Certified Solutions Architect – Associate (SAA-C03). Understanding Amazon VPC is essential for designing scalable, secure, and cost-effective cloud architectures. Mastery of this topic will help you answer scenario-based questions confidently on exam day.