Lambda function concept in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an AWS Lambda function?

An AWS Lambda function is a small piece of code that runs in the cloud without needing a server. It runs only when triggered and automatically scales.

beginner

How does AWS Lambda handle servers?

AWS Lambda automatically manages the servers for you. You don't have to set up or maintain any servers to run your code.

beginner

What triggers an AWS Lambda function to run?

A Lambda function runs when an event happens, like a file upload, a web request, or a timer. These events are called triggers.

intermediate

What is the maximum execution time for a Lambda function?

A Lambda function can run up to 15 minutes per invocation. After that, it stops automatically.

intermediate

How does AWS Lambda scale when many requests come in?

AWS Lambda automatically runs more copies of your function to handle many requests at the same time, scaling up and down as needed.

What do you need to manage when using AWS Lambda?

A Nothing, AWS manages the servers

B You must set up virtual machines

C You need to install operating systems

D You must configure physical hardware

AWS Lambda is serverless, so AWS manages all server infrastructure.

Which of these can trigger a Lambda function?

A A local computer shutdown

B A manual server reboot

C A file uploaded to cloud storage

D A printer error

Events like file uploads in cloud storage can trigger Lambda functions.

What is the maximum time a Lambda function can run per invocation?

A 5 minutes

B Unlimited

C 1 hour

D 15 minutes

Lambda functions have a maximum execution time of 15 minutes.

How does Lambda handle many requests at once?

A It queues requests and processes one at a time

B It automatically runs multiple copies of the function

C It rejects extra requests

D It requires manual scaling

Lambda automatically scales by running multiple instances of your function.

Which of these is NOT a benefit of AWS Lambda?

A Requires manual patching of servers

B No server management

C Pay only for compute time used

D Automatic scaling

Lambda does not require manual patching; AWS handles that.

Explain in simple terms what an AWS Lambda function is and how it works.

Think about how a light turns on only when you flip a switch.

Describe the main advantages of using AWS Lambda compared to traditional servers.

Imagine not having to worry about the kitchen when cooking a meal.