Lambda execution model in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the runtime environment for an AWS Lambda function.

AWS

Runtime = "[1]"

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

Anodejs14.x

Bpython3.9

Cjava8

Dgo1.x

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing an unsupported or deprecated runtime version.

Using a runtime that does not match the function code language.

The runtime environment defines the language and version your Lambda function uses. Here, nodejs14.x is a valid and common runtime.

2fill in blank

medium

Complete the code to set the memory size for an AWS Lambda function.

AWS

MemorySize = [1]

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

A512

B4096

C2048

D128

Attempts:

3 left

💡 Hint

Common Mistakes

Using memory sizes not supported by Lambda (e.g., too low or too high).

Putting memory size as a string instead of a number.

MemorySize is set in megabytes. 512 MB is a common balanced choice for Lambda functions.

3fill in blank

hard

Fix the error in the handler configuration for an AWS Lambda function.

AWS

Handler = "[1]"

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

Ahandler.index

Bindex.handler

Cmain.handler

Dapp.lambda

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of file and function names.

Using incorrect file or function names.

The handler is specified as fileName.functionName. Here, index.handler means the handler function inside the index file.

4fill in blank

hard

Fill both blanks to configure the timeout and environment variables for an AWS Lambda function.

AWS

Timeout = [1]
Environment = {"Variables": {"STAGE": "[2]"}}

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

A30

B60

Cdev

Dprod

Attempts:

3 left

💡 Hint

Common Mistakes

Setting timeout too high or too low.

Using incorrect environment variable names or values.

Timeout is set in seconds; 30 seconds is a common timeout. Environment variables are key-value pairs; here, STAGE is set to dev to indicate the development environment.

5fill in blank

hard

Fill all three blanks to define the AWS Lambda function's role, runtime, and handler.

AWS

Role = "[1]"
Runtime = "[2]"
Handler = "[3]"

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

Aarn:aws:iam::123456789012:role/lambda-exec-role

Bpython3.9

Clambda_function.lambda_handler

Dnodejs16.x

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect or incomplete IAM role ARN.

Mismatching runtime and handler names.

The Role is the IAM role ARN that grants permissions. The Runtime specifies the language version, here Python 3.9. The Handler points to the function inside the code file.