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Question 722 - SAA-C03 discussion

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A company wants to migrate an application to AWS. The company wants to increase the application's current availability The company wants to use AWS WAF in the application's architecture.

Which solution will meet these requirements?

A.
Create an Auto Scaling group that contains multiple Amazon EC2 instances that host the application across two Availability Zones. Configure an Application Load Balancer (ALB) and set the Auto Scaling group as the target. Connect a WAF to the ALB.
Answers
A.
Create an Auto Scaling group that contains multiple Amazon EC2 instances that host the application across two Availability Zones. Configure an Application Load Balancer (ALB) and set the Auto Scaling group as the target. Connect a WAF to the ALB.
B.
Create a cluster placement group that contains multiple Amazon EC2 instances that hosts the application Configure an Application Load Balancer and set the EC2 instances as the targets. Connect a WAF to the placement group.
Answers
B.
Create a cluster placement group that contains multiple Amazon EC2 instances that hosts the application Configure an Application Load Balancer and set the EC2 instances as the targets. Connect a WAF to the placement group.
C.
Create two Amazon EC2 instances that host the application across two Availability Zones. Configure the EC2 instances as the targets of an Application Load Balancer (ALB). Connect a WAF to the ALB.
Answers
C.
Create two Amazon EC2 instances that host the application across two Availability Zones. Configure the EC2 instances as the targets of an Application Load Balancer (ALB). Connect a WAF to the ALB.
D.
Create an Auto Scaling group that contains multiple Amazon EC2 instances that host the application across two Availability Zones. Configure an Application Load Balancer (ALB) and set the Auto Scaling group as the target Connect a WAF to the Auto Scaling group.
Answers
D.
Create an Auto Scaling group that contains multiple Amazon EC2 instances that host the application across two Availability Zones. Configure an Application Load Balancer (ALB) and set the Auto Scaling group as the target Connect a WAF to the Auto Scaling group.
Suggested answer: A

Explanation:

Understanding the Requirement: The company wants to migrate an application to AWS, increase its availability, and use AWS WAF in the architecture.

Analysis of Options:

Auto Scaling group with ALB and WAF: This option provides high availability by distributing instances across multiple Availability Zones. The ALB ensures even traffic distribution, and AWS WAF provides security at the application layer.

Cluster placement group with ALB and WAF: Cluster placement groups are for low-latency networking within a single AZ, which does not provide the high availability across AZs.

Two EC2 instances with ALB and WAF: This setup provides some availability but does not scale automatically, missing the benefits of an Auto Scaling group.

Auto Scaling group with WAF directly: AWS WAF cannot be directly connected to an Auto Scaling group; it needs to be attached to an ALB, CloudFront distribution, or API Gateway.

Best Solution:

Auto Scaling group with ALB and WAF: This configuration ensures high availability, scalability, and security, meeting all the requirements effectively.

Amazon EC2 Auto Scaling

Application Load Balancer

AWS WAF

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asked 16/09/2024
Arun Lailamony
38 questions
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