SAA-C03 Question #208: Real Exam Question with Answer & Explanation

Question

A company wants to create an API to authorize users by using JSON Web Tokens (JWTs). The company needs to support dynamic access to multiple AWS services by using path-based routing. Which solution will meet these requirements?

Options

• ADeploy an Application Load Balancer behind an Amazon API Gateway REST API. Configure IAM
• BDeploy an Application Load Balancer behind an Amazon API Gateway HTTP API. Use Amazon
• CDeploy a Network Load Balancer behind an Amazon API Gateway REST API. Use an AWS
• DDeploy a Network Load Balancer behind an Amazon API Gateway HTTP API. Use Amazon

Explanation

The company needs an API to authorize users with JWTs and enable dynamic path-based routing to various AWS services.

Common mistakes.

• A. Deploying an Application Load Balancer (ALB) as the primary backend for API Gateway might introduce redundant Layer 7 routing if API Gateway is already handling path-based routing, and 'Configure IAM' is too vague for JWT authorization specifics.
• B. An API Gateway HTTP API, while supporting JWTs, typically offers fewer advanced routing and integration features compared to a REST API for complex dynamic access to multiple services.
• D. A Network Load Balancer (NLB) operates at Layer 4 and does not provide path-based routing functionality itself, making it unsuitable if the load balancer is expected to perform this routing.

Concept tested. API Gateway REST API, JWT auth, VPC Link, NLB

Reference. https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-use-http-proxy-integration.html

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