Lambda integration in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a Lambda function handler in Python.

AWS

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

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

A"Hello from Lambda!"

Bprint("Hello")

Cevent + context

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of return

Returning None

The Lambda handler must return a value, here a string message.

2fill in blank

medium

Complete the AWS CLI command to invoke a Lambda function named 'MyFunction'.

AWS

aws lambda invoke --function-name [1] output.txt

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AMyFunction

BInvokeFunction

ClambdaInvoke

DFunctionName

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect function name

Using command names instead of function name

The function name must match the deployed Lambda function's name.

3fill in blank

hard

Fix the error in the Lambda function resource definition in AWS CloudFormation.

AWS

Resources:
  MyLambdaFunction:
    Type: AWS::Lambda::Function
    Properties:
      Handler: [1]
      Role: arn:aws:iam::123456789012:role/lambda-role
      Runtime: python3.8
      Code:
        S3Bucket: my-bucket
        S3Key: my-function.zip

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Amain.handler

Blambda.handler

Chandler.index

Dindex.handler

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping file and function names

Using wrong file name

The handler is specified as 'filename.functionname'. Here, 'index' is the file and 'handler' the function.

4fill in blank

hard

Fill both blanks to create an API Gateway event trigger for a Lambda function in AWS SAM template.

AWS

Events:
  ApiEvent:
    Type: [1]
    Properties:
      Path: /hello
      Method: [2]

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AApi

Bget

CS3

Dpost

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong event type like 'S3'

Using post instead of get for simple retrieval

API Gateway event type is 'Api' and common HTTP method is 'get' for retrieval.

5fill in blank

hard

Fill all three blanks to define environment variables for a Lambda function in AWS CloudFormation.

AWS

Resources:
  MyLambdaFunction:
    Type: AWS::Lambda::Function
    Properties:
      Environment:
        Variables:
          [1]: [2]
          [3]: "production"

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ALOG_LEVEL

B"DEBUG"

CSTAGE

D"dev"

Attempts:

3 left

💡 Hint

Common Mistakes

Using values without quotes

Swapping keys and values

Environment variables are key-value pairs. Here, LOG_LEVEL is set to "DEBUG" and STAGE to "production".