You want your AWS Lambda handler to process an event and return a JSON response with status code 200 and a message from the event. Which handler structure is correct?

hard📝 Application Q8 of 15

AWS - Lambda

Adef lambda_handler(event): return {'statusCode': 200, 'body': event['message']}

Bdef lambda_handler(event, context): return {'statusCode': 200, 'body': event['message']}

Cdef lambda_handler(event, context): print(event['message']) return 200

Ddef lambda_handler(context, event): return {'statusCode': 200, 'body': event['message']}

Step-by-Step Solution

Solution:

Step 1: Verify correct parameters and order
The handler must accept event first, then context. def lambda_handler(event, context): return {'statusCode': 200, 'body': event['message']} follows this order.
Step 2: Check return structure
def lambda_handler(event, context): return {'statusCode': 200, 'body': event['message']} returns a dictionary with statusCode and body keys, which is the expected JSON response format.
Final Answer:
def lambda_handler(event, context): return {'statusCode': 200, 'body': event['message']} -> Option B
Quick Check:
Correct params and JSON response structure = def lambda_handler(event, context): return {'statusCode': 200, 'body': event['message']} [OK]

Quick Trick: Use (event, context) and return dict with statusCode and body [OK]

Common Mistakes:

Swapping event and context parameters
Omitting context parameter
Returning incorrect response format

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You want your AWS Lambda handler to process an event and return a JSON response with status code 200 and a message from the event. Which handler structure is correct?

Step 1: Verify correct parameters and order

Step 2: Check return structure

Final Answer:

Quick Check:

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