AWS Application Integration and Messaging Flashcards
6 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AWS Application Integration and Messaging flashcards as text
Which AWS service provides a fully managed message queuing service that enables decoupling of distributed application components?
Answer: Amazon SQS
Amazon SQS (Simple Queue Service) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications.
What is the maximum message retention period for Amazon SQS?
Answer: 14 days
Amazon SQS can retain messages for up to 14 days, with the default retention period being 4 days.
Which Amazon SQS queue type guarantees that messages are processed exactly once and in the exact order they are sent?
Answer: FIFO Queue
SQS FIFO (First-In-First-Out) queues guarantee that messages are processed exactly once, in the exact order that they are sent, supporting up to 300 TPS.
Which AWS service is a fully managed pub/sub messaging service that enables fan-out to multiple endpoints?
Answer: Amazon SNS
Amazon SNS (Simple Notification Service) is a managed pub/sub messaging service that enables message fan-out to multiple subscribers including SQS, Lambda, HTTP, and email.
What is the purpose of an SQS Dead-Letter Queue (DLQ)?
Answer: To store messages that cannot be successfully processed
A Dead-Letter Queue receives messages that have failed processing a specified number of times, allowing you to isolate and analyze problematic messages.
Which AWS service allows you to coordinate multiple AWS services into serverless workflows using visual state machines?
Answer: AWS Step Functions
AWS Step Functions lets you build and orchestrate multi-step workflows using visual state machines, coordinating AWS services with built-in error handling and retries.