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Question 309 - SAP-C02 discussion

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A company is using Amazon API Gateway to deploy a private REST API that will provide access to sensitive data. The API must be accessible only from an application that is deployed in a VPC. The company deploys the API successfully. However, the API is not accessible from an Amazon EC2 instance that is deployed in the VPC.

Which solution will provide connectivity between the EC2 instance and the API?

A.
Create an interface VPC endpoint for API Gateway. Attach an endpoint policy that allows apigateway:* actions. Disable private DNS naming for the VPC endpoint. Configure an API resource policy that allows access from the VPC. Use the VPC endpoint's DNS name to access the API.
Answers
A.
Create an interface VPC endpoint for API Gateway. Attach an endpoint policy that allows apigateway:* actions. Disable private DNS naming for the VPC endpoint. Configure an API resource policy that allows access from the VPC. Use the VPC endpoint's DNS name to access the API.
B.
Create an interface VPC endpoint for API Gateway. Attach an endpoint policy that allows the execute-api:lnvoke action. Enable private DNS naming for the VPC endpoint. Configure an API resource policy that allows access from the VPC endpoint. Use the API endpoint's DNS names to access the API. Most Voted
Answers
B.
Create an interface VPC endpoint for API Gateway. Attach an endpoint policy that allows the execute-api:lnvoke action. Enable private DNS naming for the VPC endpoint. Configure an API resource policy that allows access from the VPC endpoint. Use the API endpoint's DNS names to access the API. Most Voted
C.
Create a Network Load Balancer (NLB) and a VPC link. Configure private integration between API Gateway and the NLB. Use the API endpoint's DNS names to access the API.
Answers
C.
Create a Network Load Balancer (NLB) and a VPC link. Configure private integration between API Gateway and the NLB. Use the API endpoint's DNS names to access the API.
D.
Create an Application Load Balancer (ALB) and a VPC Link. Configure private integration between API Gateway and the ALB. Use the ALB endpoint's DNS name to access the API.
Answers
D.
Create an Application Load Balancer (ALB) and a VPC Link. Configure private integration between API Gateway and the ALB. Use the ALB endpoint's DNS name to access the API.
Suggested answer: B

Explanation:

According to the AWS documentation1, to access a private API from a VPC, you need to do the following:

Create an interface VPC endpoint for API Gateway in your VPC. This creates a private connection between your VPC and API Gateway.

Attach an endpoint policy to the VPC endpoint that allows the execute-api:lnvoke action for your private API. This grants permission to invoke your API from the VPC.

Enable private DNS naming for the VPC endpoint. This allows you to use the same DNS names for your private APIs as you would for public APIs.

Configure a resource policy for your private API that allows access from the VPC endpoint. This controls who can access your API and under what conditions.

Use the API endpoint's DNS names to access the API from your VPC. For example, https://api-id.execute-api.region.amazonaws.com/stage.

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asked 16/09/2024
Jonathan Marboux
34 questions
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