Exam AWS Certified Solutions Architect - Professional topic 1 question 623 discussion

C, D, E You have to introduce a SQS: FIFO has limited throughput so may be a normal SQS queue with batching that can overcome the rate limits

I will go with ACD

A,C,D. Here the problem is not the speed that SQS FIFO is less than SQS, it's the order we need to maintain. Each instance should have a record in Route 53 when it's started and shoud have this record deleted from Route 53 when the instance is terminated. You don't want to record is deleted before its creation in your environment.

https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/RelayEventsKinesisStream.html https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/CloudWatch-Events-tutorial-CloudWatch-Logs.html

CDE is the answer

CDE is the answer

Even the default message groups support 300 requests , you can enable high performance option to improve high throughput:https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/high-throughput-fifo.html

ACD looks right

If you are choosing E, then you are okay with duplicate DNS records, which means that when you delete the records you have to figure out the timestamp so that you do not delete the latest entry. Yes you do have limited throughput but thats where D comes in with batching, now you can get 3000 TPS for FIFO. So my answer will have to be A,C,D

Answer C, D, E - If we would have gone with A, C, D - which makes sense from FIFO perspective, the option D does not mention 'SQS FIFO' instead just mentions SQS. Hence C, D, E

CDE is perfect answer, This question in Neal Davis practice test. The errors in the Lambda logs indicate that throttling is occurring. Throttling is intended to protect your resources and downstream applications. Though Lambda automatically scales to accommodate incoming traffic, functions can still be throttled for various reasons. In this case it is most likely that the throttling is not occurring in Lambda itself but in API calls made to Amazon Route 53. In Route 53 you are limited (by default) to five requests per second per AWS account. If you submit more than five requests per second, Amazon Route 53 returns an HTTP 400 error (Bad request). The response header also includes a Code element with a value of Throttling and a Message element with a value of Rate exceeded. The resolution here is to place the data for the DNS records into an SQS queue where they can buffer. AWS Lambda can then poll the queue and process the messages, making sure to batch the messages to reduce the likelihood of receiving more errors.

CDE better than ADE FIFO SQS is limited 300 message/second as commented below.

It's C, D, E

CCC DDD EEE ---

I'll go with C,D,E

The Correct Answer is C D E.

C, D , E