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SCS-C03Domain 3: Infrastructure SecurityInfrastructure SecuritymediumSingle choice

An internet-facing app needs protection from large DDoS events WITH 24/7 access to AWS's DDoS Response Team and cost protection for scaling during attacks. What provides this?

A.AWS Shield Standard

Standard is free baseline — no DRT, no cost protection.

B.AWS Shield Advanced on the CloudFront/ALB/Route53 resources

Correct. DRT + reporting + scaling cost protection.

C.AWS WAF alone

WAF is L7 app filtering — not volumetric DDoS protection.

D.Network ACL rate limits

NACLs have no rate limiting.

Why this answer

Shield Advanced adds: 24/7 DDoS Response Team (DRT), visibility/reporting, and cost protection (credits for scaling during an attack) — beyond Standard's automatic L3/L4 baseline protection that's free on all AWS resources. WAF handles L7; NACLs can't rate-limit.

Correct answer: B · Last reviewed 2026-11-03

Official AWS references

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Answer without seeing the solution first in the Infrastructure Security practice session.

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