Exam AWS Certified Developer Associate topic 1 question 35 discussion

Correct Answer is "B"

Option B is correct. Explanation: To process stream records in a DynamoDB table, you can create an AWS Lambda function and configure an event source mapping to the stream. This allows your Lambda function to be invoked whenever there are changes to the table. Enabling DynamoDB streams alone is not enough to trigger the Lambda function. You also need to create an event source mapping. Option A is incorrect because the StreamViewType parameter is used to determine the information included in the stream records. Option C is incorrect because mapping an SNS topic to DynamoDB streams would not trigger the Lambda function. Option D is incorrect because increasing the maximum execution time (timeout) setting of the Lambda function would not enable DynamoDB table updates to trigger the Lambda function.

B) Correct - You need to explicitly configure an event source mapping between the DynamoDB stream and the Lambda function. This tells AWS Lambda to listen to the changes in the DynamoDB stream and invoke the Lambda function when a change occurs in the table.

Correct Answer is "B"

i think so B

Option A (Changing the StreamViewType) is not the correct approach because the StreamViewType parameter value specifies the information included in the stream records (e.g., new and/or old images of the items), but it does not configure the Lambda trigger.

B looks correct

B https://amazon-dynamodb-labs.com/design-patterns/ex8streams.html

To enable DynamoDB table updates to trigger a Lambda function, you need to create an event source mapping for the Lambda function. So the correct option here would be: B. Configure event source mapping for the Lambda function Enabling DynamoDB streams is a prerequisite for setting up the event source mapping. The event source mapping enables the Lambda function to read data from the stream, which triggers the function.

A is Correct! When the question itself says DynamoDB streams is enabled and Trigger is also set then by default in the Lambda console even if you cannot see DynamoDB as the Trigger, it will be enabled!! Hence New_And_Old_Images is the correct option because if 'update' item changes are made in DynamoDB table will not be fetched in Lambda hence New_And_Old_Images to be considered

B is the correct answer

it's not A because that would return old stuff as well and they want only new updates

Correct Answer is "B"

B is correct.

B: More details here https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html

Correct Answer is "B"

Answer: B