[Solved] Which of the following is the correct syntax to define a Node.js AWS Lambda handler function? — Ans: exports.handler = async (event) => { return 'Hello'; }; | AWS

AWS - Lambda

Which of the following is the correct syntax to define a Node.js AWS Lambda handler function?

Aexports.handler = async (event) => { return 'Hello'; };

Bfunction handler(event) { return 'Hello'; }

Cmodule.exports = function(event) { return 'Hello'; }

Dlambda.handler = function(event) { return 'Hello'; }

Step-by-Step Solution

Solution:

Step 1: Identify correct Lambda handler export syntax
In Node.js Lambda, the handler is exported as 'exports.handler' and can be async.
Step 2: Check other options for correctness
function handler(event) { return 'Hello'; } is a function but not exported. module.exports = function(event) { return 'Hello'; } exports a function but not as 'handler'. lambda.handler = function(event) { return 'Hello'; } uses an undefined 'lambda' object.
Final Answer:
exports.handler = async (event) => { return 'Hello'; }; -> Option A
Quick Check:
Node.js Lambda handler syntax = exports.handler [OK]

Quick Trick: Use exports.handler for Node.js Lambda functions [OK]

Common Mistakes:

Master "Lambda" in AWS

9 interactive learning modes - each teaches the same concept differently

More AWS Quizzes

Which of the following is the correct syntax to define a Node.js AWS Lambda handler function?