Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 276 discussion

It's D - can't be C because the queue is standard queue. "The dead-letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead-letter queue of a standard queue must also be a standard queue." https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html

ANS: D https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-configure-dead-letter-queue.html

C is the ans, The dead-letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead-letter queue of a standard queue must also be a standard queue. in the question, we have SQS standard queue. hence ans is C https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html

ANS c Configure a new SQS FIFO queue as a dead-letter queue to isolate the faulty messages. Fault isolation: A dead-letter queue (DLQ) provides a dedicated location for storing messages that cannot be processed successfully. This isolates the faulty message from the main queue, allowing subsequent messages to be processed without interruption. FIFO processing: Since the faulty message is causing an error on the backend, it's crucial to retain the original order of messages. A FIFO queue preserves the order in which messages were received, ensuring proper processing order after resolving the issue with the faulty message. Message analysis: Placing the faulty message in the DLQ facilitates further analysis to identify the cause of the error and update the backend to handle such messages in the future.

Option D is most logical right answer. This question description looks little confusing. Why in a standard SQS one faulty message can block other message processing. It must be a FIFO queue. Processing logic should continue reading other arriving messages that are not faulty. One faulty message may keep failing after every 30 sec of visibility timeout.

It is C. In an ordering system, it is important to receive the orders in order, so FIFO. Both C and D are new SQS queues - doesn't matter what the original was.

Somehow I read the option D as create a new queue (to replace the current one) and so confused of what's going on. Wording for this exam is really disaster.

Correct D.

it's a D

The dead-letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead-letter queue of a standard queue must also be a standard queue.

Configuring a new SQS standard queue as a dead-letter queue (option D) is not the best choice in this scenario because a standard queue does not provide the strict ordering and exactly-once processing semantics needed for isolating faulty messages. The use of a FIFO queue ensures that the ordering of messages is preserved, which is crucial for troubleshooting and analysis.

C its a C

It's D - can't be C because the queue is standard queue. "The dead-letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead-letter queue of a standard queue must also be a standard queue." https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html

D dead letter queu

D indeed C incorrect FIFO will slow down the process

SQS - dead letter queue is designed for failures and needs to be addressed by the developers. We use it all teh time.

Amazon Simple Queue Service (SQS) allows you to set up Dead-Letter Queues (DLQs) to isolate messages that can't be processed correctly. This option is useful when you want to set aside and isolate messages that can't be processed (consumed) successfully to examine them later. When using standard queues, the DLQ should also be a standard queue.