Why serverless architecture matters in AWS - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a serverless function using AWS Lambda.

AWS

def handler(event, context):
    return [1]

Drag options to blanks, or click blank then click option'

Aprint("Hello")

Bevent

Ccontext

D"Hello from Lambda!"

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of return

Returning the event or context object directly

The Lambda function should return a string as the response. Returning a string like "Hello from Lambda!" is correct.

2fill in blank

medium

Complete the code to create an AWS Lambda function trigger from an API Gateway event.

AWS

def handler(event, context):
    if event["httpMethod"] == [1]:
        return {"statusCode": 200, "body": "Success"}

Drag options to blanks, or click blank then click option'

A"GET"

B"POST"

C"PUT"

D"DELETE"

Attempts:

3 left

💡 Hint

Common Mistakes

Using POST or PUT instead of GET

Missing quotes around the method string

The API Gateway event includes the HTTP method in the "httpMethod" key. To handle a GET request, the value should be "GET".

3fill in blank

hard

Fix the error in the AWS SAM template to define a Lambda function resource.

AWS

Resources:
  MyFunction:
    Type: [1]
    Properties:
      Handler: index.handler
      Runtime: python3.9
      CodeUri: ./src/

Drag options to blanks, or click blank then click option'

A"AWS::Serverless::Function"

B"AWS::S3::Bucket"

C"AWS::Lambda::Function"

D"AWS::EC2::Instance"

Attempts:

3 left

💡 Hint

Common Mistakes

Using AWS::Lambda::Function instead of AWS::Serverless::Function

Using unrelated resource types

In AWS SAM templates, Lambda functions are defined with the type "AWS::Serverless::Function" to enable serverless features.

4fill in blank

hard

Fill both blanks to configure an AWS Lambda function with environment variables and memory size.

AWS

Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      MemorySize: [1]
      Environment:
        Variables:
          STAGE: [2]

Drag options to blanks, or click blank then click option'

A512

B"prod"

C"dev"

D128

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings for MemorySize

Using numbers without quotes for environment variables

The MemorySize property expects an integer value like 512 (MB). Environment variables are strings, so "dev" is a valid stage name.

5fill in blank

hard

Fill all three blanks to create a serverless function with an S3 trigger and proper permissions.

AWS

Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: index.handler
      Runtime: python3.9
      Events:
        S3Event:
          Type: S3
          Properties:
            Bucket: [1]
            Events: [2]
      Policies:
        - [3]

Drag options to blanks, or click blank then click option'

A"my-upload-bucket"

B"s3:ObjectCreated:*"

C"AmazonS3ReadOnlyAccess"

D"arn:aws:s3:::my-upload-bucket"

Attempts:

3 left

💡 Hint

Common Mistakes

Using ARN instead of bucket name for Bucket

Incorrect event string

Wrong policy name

The S3 event trigger requires the bucket name as a string, the event type as "s3:ObjectCreated:*", and the policy to allow read access is "AmazonS3ReadOnlyAccess".