AWS Serverless and Lambda Architecture

Question 1

What is the maximum execution timeout for an AWS Lambda function?

Accepted Answer

15 minutes

Answer

5 minutes

Answer

10 minutes

Answer

30 minutes

Question 2

Which AWS service acts as the front door to Lambda functions for HTTP API calls?

Accepted Answer

API Gateway

Answer

CloudFront

Answer

Elastic Load Balancer

Answer

Route 53

Question 3

What is a Lambda 'cold start'?

Accepted Answer

The initial latency when a new Lambda container is provisioned

Answer

A Lambda function running at low CPU

Answer

A Lambda function invoked in a cold AWS region

Answer

A Lambda function with no environment variables

Question 4

Which Lambda feature eliminates cold starts by keeping a specified number of execution environments initialized?

Accepted Answer

Provisioned concurrency

Answer

Reserved concurrency

Answer

Function aliases

Answer

Lambda layers

Question 5

An application uses AWS Lambda and needs to share common dependencies across multiple functions. What is the best approach?

Accepted Answer

Use Lambda Layers to share code and libraries

Answer

Package dependencies into each function separately

Answer

Store dependencies in S3 and download at runtime

Answer

Use an EC2 instance to host shared libraries

Question 6

Which AWS service lets you coordinate multiple Lambda functions into a visual workflow with branching, parallel execution, and error handling?

Accepted Answer

AWS Step Functions

Answer

AWS Batch

Answer

Amazon SWF

Answer

Amazon EventBridge