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Exam AWS Certified Solutions Architect - Associate SAA-C03 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 468 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 468
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company is developing a microservices application that will provide a search catalog for customers. The company must use REST APIs to present the frontend of the application to users. The REST APIs must access the backend services that the company hosts in containers in private VPC subnets.

Which solution will meet these requirements?

  • A. Design a WebSocket API by using Amazon API Gateway. Host the application in Amazon Elastic Container Service (Amazon ECS) in a private subnet. Create a private VPC link for API Gateway to access Amazon ECS.
  • B. Design a REST API by using Amazon API Gateway. Host the application in Amazon Elastic Container Service (Amazon ECS) in a private subnet. Create a private VPC link for API Gateway to access Amazon ECS.
  • C. Design a WebSocket API by using Amazon API Gateway. Host the application in Amazon Elastic Container Service (Amazon ECS) in a private subnet. Create a security group for API Gateway to access Amazon ECS.
  • D. Design a REST API by using Amazon API Gateway. Host the application in Amazon Elastic Container Service (Amazon ECS) in a private subnet. Create a security group for API Gateway to access Amazon ECS.
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Suggested Answer: B 🗳️
by nosense at May 16, 2023, 8:25 p.m.
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cloudenthusiast
Highly Voted 1 year, 7 months ago
Selected Answer: B
REST API with Amazon API Gateway: REST APIs are the appropriate choice for providing the frontend of the microservices application. Amazon API Gateway allows you to design, deploy, and manage REST APIs at scale. Amazon ECS in a Private Subnet: Hosting the application in Amazon ECS in a private subnet ensures that the containers are securely deployed within the VPC and not directly exposed to the public internet. Private VPC Link: To enable the REST API in API Gateway to access the backend services hosted in Amazon ECS, you can create a private VPC link. This establishes a private network connection between the API Gateway and ECS containers, allowing secure communication without traversing the public internet.
upvoted 14 times
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MNotABot
Highly Voted 1 year, 5 months ago
Question itself says: "The company must use REST APIs", hence WebSocket APIs are not applicable and such options are eliminated straight away.
upvoted 9 times
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MatAlves
Most Recent 3 months, 1 week ago
Selected Answer: B
"VPC links enable you to create private integrations that connect your HTTP API routes to private resources in a VPC, such as Application Load Balancers or Amazon ECS container-based applications."
upvoted 3 times
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freedafeng
5 months, 1 week ago
I think the connection should be from the application to the ECS in the private VPC, instead of from the API Gateway to the ECS in the private VPC. API Gateway only needs to connect to the application...
upvoted 1 times
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awsgeek75
11 months, 1 week ago
Selected Answer: B
AC are wrong as they are not REST API D, you don't make SG for API Gateway to EC2, you have to make a VPC Link. More details at https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-vpc-links.html
upvoted 5 times
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Guru4Cloud
1 year, 4 months ago
Selected Answer: B
To allow the REST APIs to securely access the backend, a private VPC link should be created from API Gateway to the ECS containers. A private VPC link provides private connectivity between API Gateway and the VPC without using public IP addresses or requiring an internet gateway/NAT
upvoted 5 times
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Axeashes
1 year, 6 months ago
Selected Answer: B
https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-private-integration.html
upvoted 2 times
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TariqKipkemei
1 year, 6 months ago
Selected Answer: B
A VPC link is a resource in Amazon API Gateway that allows for connecting API routes to private resources inside a VPC.
upvoted 3 times
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samehpalass
1 year, 6 months ago
B is the right choice
upvoted 2 times
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Yadav_Sanjay
1 year, 6 months ago
Why Not D
upvoted 3 times
potomac
1 year, 1 month ago
A security group acts as a firewall for associated EC2 instances, controlling both inbound and outbound traffic at the instance level.
upvoted 2 times
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nosense
1 year, 7 months ago
Selected Answer: B
b is right, bcs vpc link provided security connection
upvoted 4 times
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