AWS Certified Developer - Associate | 178 Questions and Answers(A+ Solution guide)

AWS SQS long polling allows the SQS service to wait until a message is available in the queue before sending a response? - true A visibility timeout is a period of time during which AWS SQS prevents other consuming components from receiving and processing the message? - true What AWS service can you use to "fan out" SQS messages to multiple queues? -SNS (SQS) What is the maximum long poll timeout? - 20 seconds You have a fleet of EC2 instances that are constantly polling empty SQS queues which is burning CPU complete cycles. What should you do? - Enable SQS long polling What is the default SQS visibility time out? - 30 seconds EC2 instances download jobs from SQS queue, but are taking too long to process. What api call can you use to the length of time to process jobs? - ChangeMessageVisibility (SQS) You are designing a new app which processes payments and delivers promotional emails to customers. Your need to ensure that the payment process takes priority over the creation of emails. What is the best way to achieve this? - Use 2 SQS queues. Poll that payment queue first. An SQS message can NOT be delivered multiple times? - False, SQS messages can be delivered multiple times What is the default visibility timeout for SQS? - 30 seconds How long can SQS messages be? - Messages can contain up to 256 KB of text in any formatSQS was the second service on AWS? - False, SQS was the first