Questions 40 to 42

Explanations for questions 40 to 42

We'll cover the following

Question 40

A mobile client requires data from several application-layer services to populate its user interface. What can the application team use to decouple the client interface from the underlying services behind them?

  1. AWS Device Farm
  2. Amazon Cognito
  3. Amazon API Gateway
  4. Application Load Balancer

Correct Answer: 3

Explanation: Amazon API Gateway decouples the client application from the back-end application-layer services by providing a single endpoint for API requests.

The architecture of API Gateway is depicted in the diagram below:

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