What happens if a VPC has two subnets with overlapping IP address ranges?

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

Correct Answer: You cannot create subnets with overlapping IP ranges in the same VPC

AWS enforces that CIDR blocks for subnets within a VPC must not overlap....

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Real Exam ScenarioAmazon VPC

What happens if a VPC has two subnets with overlapping IP address ranges?

✓ Correct Answer & ExplanationAmazon VPC

Correct Answer

You cannot create subnets with overlapping IP ranges in the same VPC

Why This Answer Is Correct

AWS enforces that CIDR blocks for subnets within a VPC must not overlap.

📚 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.