AWS Serverless Architecture and AWS Lambda 2

Question 1

Which AWS service is most commonly used to expose Lambda functions as RESTful HTTP endpoints?

Accepted Answer

Amazon API Gateway

Answer

Amazon API Gateway is a fully managed service for creating, deploying, and managing REST, HTTP, and WebSocket APIs that can invoke Lambda functions.

Question 2

What is the primary purpose of AWS Step Functions in a serverless architecture?

Accepted Answer

Orchestrating multiple Lambda functions and AWS services into visual workflows

Answer

AWS Step Functions orchestrates multiple Lambda functions and AWS services into coordinated workflows using state machines.

Question 3

Which Amazon DynamoDB feature automatically deletes table items after a developer-defined expiration timestamp?

Accepted Answer

DynamoDB Time to Live (TTL)

Answer

DynamoDB TTL lets you set a per-item expiration attribute; DynamoDB automatically deletes expired items within 48 hours at no extra cost.

Question 4

In Amazon API Gateway, what does a 'stage' represent?

Accepted Answer

A named snapshot of a deployment used to separate environments such as dev, test, and prod

Answer

An API Gateway stage is a named reference to a deployment, enabling separate configurations and URLs for different environments like development and production.

Question 5

Which AWS service provides a fully managed serverless GraphQL API?

Accepted Answer

AWS AppSync

Answer

AWS AppSync is a fully managed GraphQL service that connects to data sources like DynamoDB and Lambda and supports real-time subscriptions.

AWS Practice Test

AWS Practice Test

AWS Serverless Architecture and AWS Lambda 2