API Gateway

Question 1

What is API Gateway

What are its 6 key features?

Answer 1

• It’s a solution for creating secure APIs in your cloud environment at any scale.
• Limits (10.000 per second)
• Stages (dev, prod)
• Deploy API (Select a stage and deploy)
• Cors (Enforced by client)
• Same Origin policies (XXS attacks)
• Protection (Cognito or Lambda)

Question 2

What are 3 common use cases for API gateway?

Answer 2

Web App

IoT Device

Mobile App

Question 3

In API Gateway, Can you have multiple versions of your API?

Answer 3

Yes

Question 4

How you would define a RESTful API with API Gateway

Answer 4

Expose HTTPS endpoints

Question 5

What are the 5 key features of API Gateway?

Answer 5

• Allows you to track and control any usage of the API. Throttle requests to help prevent attacks.
• Expose HTTPS endpoints to define a RESTful API.
• Highly scalable (happens automatically) and cost effective.
• Send each API endpoint to a different target.
• Maintain Multiple Versions of your API.

Question 6

In API Gateway, Where are APIs deployed to?

Answer 6

Stages

Question 7

In API Gateway, Anytime you change your API, what action must you take?

Answer 7

Deploy It

Question 8

What can you select as Integration type with an API Gateway?

5 elements

Answer 8

• Lambda Function
• HTTP
• Mock
• AWS Services
• VPC Link

Question 9

How can you both reduce the number of API calls, and improve latency of API Gateway?

Answer 9

Enable caching

Question 10

In API Gateway, Where is CORS enforced?

Answer 10

The client

CORS is always enforced by the client.

Question 11

In API Gateway, Same Origin Policies can help prevent this kind of attacks…

Answer 11

XSS attacks

• Ignores Curl and Postman
• Permits access to data between web-pages
• Enforced at the web browser level