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Question 59 - SCS-C01 discussion

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A company hosts its public website on Amazon EC2 instances behind an Application Load Balancer

(ALB). The instances are in an EC2 Auto Scaling group across multiple Availability Zones. The website is under a DDoS attack by a specific loT device brand that is visible in the user agent A security engineer needs to mitigate the attack without impacting the availability of the public website.

What should the security engineer do to accomplish this?

A.
Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Associate the v/eb ACL with the ALB.
Answers
A.
Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Associate the v/eb ACL with the ALB.
B.
Configure an Amazon CloudFront distribution to use the ALB as an origin. Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Associate the web ACL with the ALB Change the public DNS entry of the website to point to the CloudFront distribution.
Answers
B.
Configure an Amazon CloudFront distribution to use the ALB as an origin. Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Associate the web ACL with the ALB Change the public DNS entry of the website to point to the CloudFront distribution.
C.
Configure an Amazon CloudFront distribution to use a new ALB as an origin. Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Change the ALB security group to alow access from CloudFront IP address ranges only Change the public DNS entry of the website to point to the CloudFront distribution.
Answers
C.
Configure an Amazon CloudFront distribution to use a new ALB as an origin. Configure a web ACL rule for AWS WAF to block requests with a string match condition for the user agent of the loT device. Change the ALB security group to alow access from CloudFront IP address ranges only Change the public DNS entry of the website to point to the CloudFront distribution.
D.
Activate AWS Shield Advanced to enable DDoS protection. Apply an AWS WAF ACL to the ALB. and configure a listener rule on the ALB to block loT devices based on the user agent.
Answers
D.
Activate AWS Shield Advanced to enable DDoS protection. Apply an AWS WAF ACL to the ALB. and configure a listener rule on the ALB to block loT devices based on the user agent.
Suggested answer: D
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asked 16/09/2024
William Hyde
40 questions
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