A network security team wants to prevent all traffic from a specific malicious subnet (192.168.1.0/24) from reaching the entire web subnet. How should this be implemented?

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

Correct Answer: Add an inbound Deny rule for 192.168.1.0/24 with a low rule number in the Network ACL

Only Network ACLs support explicit 'Deny' rules for specific IP ranges at the network layer....

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

A network security team wants to prevent all traffic from a specific malicious subnet (192.168.1.0/24) from reaching the entire web subnet. How should this be implemented?

✓ Correct Answer & ExplanationNetwork ACLs

Correct Answer

Add an inbound Deny rule for 192.168.1.0/24 with a low rule number in the Network ACL

Why This Answer Is Correct

Only Network ACLs support explicit 'Deny' rules for specific IP ranges at the network layer.

📚 What This Question Tests

This question evaluates your knowledge of Network ACLs — a core concept tested in AWS Certified Solutions Architect – Associate (SAA-C03). Understanding Network ACLs 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.