Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 45 discussion

A, C, D options are out, since Lambda is fully managed service which provides high availability and scalability by its own Answers are B and E

BE so that the lambda function reads the SQS queue and nothing gets lost

B,E : SQS is a pull mechanism broker, with at least one delivery, so by using SQS no messages get lost.

Create an Amazon Simple Queue Service (Amazon SQS) queue, and subscribe it to the SNS topic: This will decouple the data ingestion process and ensure that messages are not lost if the Lambda function fails to process them immediately Modify the Lambda function to read from an Amazon Simple Queue Service (Amazon SQS) queue: This ensures that the Lambda function can process the messages from the SQS queue, providing a reliable way to handle data ingestion even if there are network issues.

BE for sure

BE is correct as SQS ensures the messages are stored in a queue for processing. A: No issue with Lambda availability so this solution is wrong C: No issues with CPU or memory so no value added by this step also D: This is not a provisioning issue so provisioning more Lambda won't solve the re-execution issues. The missed messages will still be lost

Since network timeout is the issue here, introduce SQS and read from it , that way when network goes down, data still remains in the queue and when connectivity is back, the lambda function can continue from the last data in the queue

the correct combination of actions to ensure that the Lambda function ingests all data in the future is to create an SQS queue and subscribe it to the SNS topic (option B) and modify the Lambda function to read from the SQS queue (option E).

Key: network connectivity issues

This one told you the answer in the answer choices. Just add the word THEN between B and E and there ya go.

B and E , the FAN out model , SQS will help to retrie the work and delayed processing

B) Create an Amazon Simple Queue Service (Amazon SQS) queue, and subscribe it to the SNS topic. E) Modify the Lambda function to read from an Amazon Simple Queue Service (Amazon SQS) queue.

BE is most logical answer.

Option BE is the right answer.

A. Deploying the Lambda function in multiple Availability Zones improves availability and fault tolerance but does not guarantee ingestion of all data. C. Increasing CPU and memory allocated to the Lambda function may improve its performance but does not address the issue of connectivity failures. D. Increasing provisioned throughput for the Lambda function is not applicable as Lambda functions are automatically scaled by AWS and provisioned throughput is not configurable. Therefore, the correct combination of actions to ensure that the Lambda function ingests all data in the future is to create an SQS queue and subscribe it to the SNS topic (option B) and modify the Lambda function to read from the SQS queue (option E).

The combination of actions should a solutions architect take to ensure that the Lambda function ingests all data in the future, are by Creating an Amazon Simple Queue Service (Amazon SQS) queue, and subscribe it to the SNS topic, and Modifying the Lambda function to read from an Amazon Simple Queue Service (Amazon SQS) queue

B. Create an Amazon Simple Queue Service (Amazon SQS) queue, and subscribe it to the SNS topic. This will decouple the ingestion workflow and provide a buffer to temporarily store the data in case of network connectivity issues. E. Modify the Lambda function to read from an Amazon Simple Queue Service (Amazon SQS) queue. This will allow the Lambda function to process the data from the SQS queue at its own pace, decoupling the data ingestion from the data delivery and providing more flexibility and fault tolerance.