AWS SNS

Publish and subscribe messaging service

Amazon Simple Notification Service (SNS) is a fully managed messaging service that enables you to decouple microservices, distributed systems, and serverless applications. SNS provides topics for high-throughput, push-based, many-to-many messaging. Using Amazon SNS topics, your publisher systems can fan out messages to a large number of subscriber endpoints or clients.

5 minutes 5 Questions

Concepts covered: Topics, Message Delivery Status, AWS SNS Security, Message Retention and Reliability, Simple Notification Service (SNS), Subscriptions, Message Attributes, Fanout Pattern, SNS Filtering, SNS Protocol Support

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AWS Certified Solutions Architect - AWS SNS Example Questions

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Question 1

What protocols does SNS support?

HTTP/S, email, SMS, SQS, Lambda, and mobile push notifications SMTP RDP FTP and SFTP

Correct Answer: HTTP/S, email, SMS, SQS, Lambda, and mobile push notifications

SNS supports multiple protocols including HTTP/S, email, SMS, SQS, Lambda, and mobile push notifications to send messages to subscribers.

Question 2

What is the difference between an SNS topic and an AWS Lambda function?

An SNS topic and an AWS Lambda function are the same thing. An SNS topic is used for invoking a Lambda function while an AWS Lambda function is used for sending a message to an SNS topic. An SNS topic is used for pub/sub messaging while an AWS Lambda function is used for running code in response to an event. An SNS topic is used for running code in response to an event while an AWS Lambda function is used for pub/sub messaging.

Correct Answer: An SNS topic is used for pub/sub messaging while an AWS Lambda function is used for running code in response to an event.

SNS is a pub/sub messaging service that enables fan-out architecture by allowing multiple subscribed endpoints to receive the same message simultaneously. AWS Lambda is a serverless compute service that runs your code in response to events and automatically manages the compute resources in the AWS Cloud. SNS and Lambda have different use cases and can work together to build complex systems.

Question 3

Can SNS topics be used for sending HTTP/HTTPS requests?

Only if the requests are being sent within the same region Yes No Only if the requests are being sent to EC2 instances

Correct Answer: Yes

SNS topics can be used to trigger HTTP/HTTPS requests through the use of AWS Lambda or Amazon SQS.

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