Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 149 discussion

The correct solution is Option A. Creating an Amazon Simple Queue Service (Amazon SQS) FIFO queue to hold messages and setting up an AWS Lambda function to process messages from the queue will ensure that the event data is processed in the correct order and minimize operational overhead. Option B is incorrect because using Amazon Simple Notification Service (Amazon SNS) does not guarantee the order in which messages are delivered. Option C is incorrect because using an Amazon SQS standard queue does not guarantee the order in which messages are processed. Option D is incorrect because using an Amazon SQS queue as a subscriber to an Amazon SNS topic does not guarantee the order in which messages are processed.

A is the correct solution. By creating an Amazon Simple Queue Service (Amazon SQS) FIFO queue to hold messages and setting up an AWS Lambda function to process messages from the queue, the company can ensure that the order of the event data is maintained throughout processing. SQS FIFO queues guarantee the order of messages and are suitable for scenarios where strict message ordering is required. B is incorrect because Amazon Simple Notification Service (Amazon SNS) topics are not designed to preserve message order. SNS is a publish-subscribe messaging service and does not guarantee the order of message delivery. C is incorrect because using an SQS standard queue does not guarantee the order of message processing. SQS standard queues provide high throughput and scale, but they do not guarantee strict message ordering. D is incorrect because configuring an SQS queue as a subscriber to an SNS topic does not ensure message ordering. SNS topics distribute messages to subscribers independently, and the order of message processing is not guaranteed.

Ans A - SQS (FIFO) ensures data is processed in the order it is received

"The data is written in a specific order that must be maintained throughout processing." A without reading other options.

Easiest question ever?

"specific order" = must be FIFO queue = only mentioned in A

Create an Amazon Simple Queue Service (Amazon SQS) FIFO queue to hold messages. Set up an AWS Lambda function to process messages from the queue.

A is correct. Use FIFO to process in the specific order required

Option A is correct...data is processed in the correct order

Only A is right option here.

Option A is the best option.

"The data is written in a specific order that must be maintained throughout processing" --> FIFO

specific order = FIFO

A is correct

Definitely A

A is correct

FIFO means order, so Option A.