Questions 7 to 9

Explanations for questions 7 to 9

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Question 7

A company is migrating a decoupled application to AWS. The application uses a message broker based on the MQTT protocol. The application will be migrated to Amazon EC2 instances, and the solution for the message broker must not require rewriting the application code.

Which AWS service can be used for the migrated message broker?

  1. Amazon SQS
  2. Amazon SNS
  3. Amazon MQ
  4. AWS Step Functions

Correct Answer: 3

Explanation: Amazon MQ is a managed message broker service for Apache ActiveMQ that makes it easy to set up and operate message brokers in the cloud. Connecting current applications to Amazon MQ is easy because it uses industry-standard APIs and protocols for messaging, including JMS, NMS, AMQP, STOMP, MQTT, and WebSocket. Using standards means that in most cases, there is no need to rewrite any messaging code when you migrate to AWS.

INCORRECT: “Amazon SQS” is incorrect. This is an Amazon proprietary service and does not support industry-standard messaging APIs and protocols.

INCORRECT: “Amazon SNS” is incorrect. This is a notification service not a message bus.

CORRECT: “Amazon MQ” is the correct answer.

INCORRECT: “AWS Step Functions” is incorrect. This is a workflow orchestration service, not a message bus.

References:

https://aws.amazon.com/amazon-mq/

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