Which AWS resource can host AWS WAF rules to protect web traffic?
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Correct answer: Application Load Balancer.
Why this is the answer
An Application Load Balancer (ALB) can host AWS WAF rules to protect web traffic. AWS WAF (Web Application Firewall) integrates with ALBs to filter malicious requests before they reach your backend servers, offering protection against common web exploits. Amazon EC2 instances can run web servers but don't natively host WAF rules; WAF protects resources in front of EC2. AWS Trusted Advisor is a service that provides recommendations for optimizing AWS resources, not a resource for hosting WAF rules. A Network Load Balancer (NLB) operates at the transport layer (Layer 4) and does not support WAF integration, which operates at the application layer (Layer 7).
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