Flashcards

Amazon API Gateway

Fully managed service to create, deploy, and manage APIs

5 minutes 5 Questions

Amazon API Gateway is a fully managed AWS service that enables developers to create, publish, maintain, monitor, and secure APIs at any scale. It acts as the "front door" for applications to access data, business logic, or functionality from your backend services.<br><br>API Gateway handles all the…

Concepts covered

API Gateway REST APIs API Gateway Authentication API Gateway Throttling API Gateway Monitoring and Logging Custom Domain Names API Gateway Caching API Gateway Stages API Gateway Integration API Gateway Security API Gateway Import and Export

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AWS Certified Solutions Architect - Amazon API Gateway Example Questions

Test your knowledge of Amazon API Gateway

Question 1

What is the purpose of the mapping template in API Gateway?

To transform the request and response payloads between the client and backend service. To set up request/response validation for the API. To generate an OpenAPI specification for the API. To define the stages and deployment environments for the API.

Correct Answer: To transform the request and response payloads between the client and backend service.

The mapping template allows you to transform the request and response payloads between the client and backend service. This is useful for converting between different data formats and structures, or for adding/removing data elements from the payloads.

Question 2

In the Amazon API Gateway management REST API, which HTTP method is used to create a new Resource under a specified parent (the CreateResource operation)?

GET PUT DELETE POST

Correct Answer: POST

In the Amazon API Gateway management REST API, the CreateResource operation is invoked with an HTTP POST request. POST is used to create a new subordinate resource under a specified parent, allowing the service to assign identifiers. In contrast, GET retrieves resources, DELETE removes them, and while PUT can create or replace a resource at a known URI in general REST semantics, API Gateway's management API specifically uses POST for creating resources.

Question 3

In Amazon API Gateway, which feature lets you add authentication and authorization to your APIs by validating tokens (for example via a Lambda function or an Amazon Cognito user pool) before requests are routed to the backend?

API Gateway Authorizers API Gateway Endpoints API Gateway Integrations API Gateway Triggers

Correct Answer: API Gateway Authorizers

In Amazon API Gateway, Authorizers are the feature used to add authentication and authorization to your APIs. Authorizers validate incoming tokens (such as JWTs) using a Lambda function or an Amazon Cognito user pool, and can generate allow/deny IAM policies to control access to API methods before requests reach the backend. Other features like Endpoints, Triggers, and Integrations do not provide request authentication/authorization.

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