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Question 747 - SAA-C03 discussion

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A company runs an application in a VPC with public and private subnets. The VPC extends across multiple Availability Zones. The application runs on Amazon EC2 instances in private subnets. The application uses an Amazon Simple Queue Service (Amazon SOS) queue.

A solutions architect needs to design a secure solution to establish a connection between the EC2 instances and the SOS queue

Which solution will meet these requirements?

A.
Implement an interface VPC endpoint tor Amazon SOS. Configure the endpoint to use the private subnets. Add to the endpoint a security group that has an inbound access rule that allows traffic from the EC2 instances that are in the private subnets.
Answers
A.
Implement an interface VPC endpoint tor Amazon SOS. Configure the endpoint to use the private subnets. Add to the endpoint a security group that has an inbound access rule that allows traffic from the EC2 instances that are in the private subnets.
B.
Implement an interface VPC endpoint tor Amazon SOS. Configure the endpoint to use the public subnets. Attach to the interface endpoint a VPC endpoint policy that allows access from the EC2 Instances that are in the private subnets.
Answers
B.
Implement an interface VPC endpoint tor Amazon SOS. Configure the endpoint to use the public subnets. Attach to the interface endpoint a VPC endpoint policy that allows access from the EC2 Instances that are in the private subnets.
C.
Implement an interface VPC endpoint for Ama7on SOS. Configure the endpoint to use the public subnets Attach an Amazon SOS access policy to the interface VPC endpoint that allows requests from only a specified VPC endpoint.
Answers
C.
Implement an interface VPC endpoint for Ama7on SOS. Configure the endpoint to use the public subnets Attach an Amazon SOS access policy to the interface VPC endpoint that allows requests from only a specified VPC endpoint.
D.
Implement a gateway endpoint tor Amazon SOS. Add a NAT gateway to the private subnets. Attach an 1AM role to the EC2 Instances that allows access to the SOS queue.
Answers
D.
Implement a gateway endpoint tor Amazon SOS. Add a NAT gateway to the private subnets. Attach an 1AM role to the EC2 Instances that allows access to the SOS queue.
Suggested answer: A

Explanation:

Understanding the Requirement: The application running on EC2 instances in private subnets needs to securely connect to an Amazon SQS queue without exposing traffic to the public internet.

Analysis of Options:

Interface VPC Endpoint in Private Subnets: Allows private, secure connectivity to SQS without using the public internet. Configuring security groups ensures controlled access from EC2 instances.

Interface VPC Endpoint in Public Subnets: Not necessary for private EC2 instances and exposes additional security risks.

Gateway Endpoint: Gateway endpoints are not supported for SQS; they are used for services like S3 and DynamoDB.

NAT Gateway with IAM Role: Increases costs and complexity compared to using an interface VPC endpoint directly.

Best Solution:

Interface VPC Endpoint in Private Subnets: This option ensures secure, private connectivity to SQS, meeting the requirement with minimal complexity and optimal security.

VPC Endpoints

Amazon SQS and VPC Endpoints

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asked 16/09/2024
DAVID STAATZ
40 questions
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