November 05, 2022

Top 20 AWS Message Queue(MQ) Interview Questions and Answers


                It is simple to set up and run message brokers in the cloud using Amazon MQ, a managed message broker service for Apache ActiveMQ and RabbitMQ. You have direct access to messaging APIs and standards including JMS, NMS, AMQP 1.0 and 0.9.1, STOMP, MQTT, and WebSocket as well as the ActiveMQ and RabbitMQ consoles. Since you don't need to change any messaging code in your apps, switching from any message broker that complies with these standards to Amazon MQ is simple.


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Ques: 1). What is handled on my behalf by Amazon MQ?

Answer:

From supplying the infrastructure capacity you require, including broker instances and storage, to installing the broker software, Amazon MQ handles the labour involved in setting up a message broker. After your broker is operational, Amazon takes care of continuing software updates, security patches, and issue finding and repair. For message durability, Amazon MQ stores messages redundantly across many Availability Zones (AZs). With active/backup brokers, in the case of a failure, Amazon MQ immediately switches to a standby instance so you can keep sending and receiving messages.


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Ques: 2). How can I start using Amazon MQ?

Answer:

Cloud message brokers are simple to set up and run thanks to Amazon MQ. With Amazon MQ, you can quickly establish a production-ready message broker using the AWS Management Console, CLI, or API calls. To connect to your current apps and begin delivering messages, you can often connect by just updating the endpoints of your Amazon MQ broker.


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Ques: 3). How do I migrate if I'm not using ActiveMQ or RabbitMQ as my message broker?

Answer:

The most popular messaging protocols and APIs, including AMQP, STOMP, MQTT, and WebSocket, are all compatible with Amazon MQ. These include Java Message Service (JMS),.NET Message Service (NMS), and Java Message Service (JMS). Since your applications' messaging code doesn't need to be completely rewritten, switching from any standards-based message broker to Amazon MQ is made simple. In most situations, you may start delivering messages by simply updating the endpoints of your Amazon MQ broker to connect to your current apps.


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Ques: 4). As opposed to Amazon SQS and SNS, when should I utilise Amazon MQ?

Answer:

Messaging services like Amazon MQ, Amazon SQS, and Amazon SNS are appropriate for businesses of all sizes. Consider Amazon MQ if you want to rapidly and simply migrate your messaging to the cloud while still utilising it with your current apps. You may transition from any standards-based message broker to Amazon MQ without having to completely rewrite the messaging code in your apps since it supports industry-standard APIs and protocols. You are advised to take Amazon SQS and Amazon SNS into account while developing brand-new cloud-based apps. Amazon SQS and SNS are lightweight, fully managed message queue and topic services that offer straightforward, user-friendly APIs and almost indefinite scalability. You can use Amazon SQS and SNS to decouple and scale microservices, distributed systems, and serverless applications, and improve reliability.


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Ques: 5). How can I encrypt data in Amazon MQ using my own unique keys?

Answer:

To produce and manage keys for the at-rest encryption of your data in Amazon MQ, the AWS Key Management Service (AWS KMS) is supported by Amazon MQ. A KMS key in the Amazon MQ service account, a KMS key in your account that Amazon MQ produces and manages, or a KMS key in your account that you create and manage are the three choices from which you may choose when creating a broker to encrypt your data for Amazon MQ for ActiveMQ. A KMS key in the Amazon MQ service account is utilised for Amazon MQ for RabbitMQ. In addition to encryption at rest, all data transferred between Amazon MQ and client applications is securely transmitted using TLS/SSL.


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Ques: 6). Which kinds of storage are offered by Amazon MQ for ActiveMQ?

Answer:

Amazon MQ for ActiveMQ offers two broker storage options: Amazon Elastic File System (Amazon EFS) for durability optimization and Amazon Elastic Block Store for performance optimization (EBS). Use Amazon EFS-backed durability-optimized brokers to benefit from excellent durability and replication across different Availability Zones. Use EBS-backed throughput optimised brokers to benefit from high throughput for your big volume applications. High-volume applications utilising Amazon MQ require fewer brokers and cost less to operate thanks to throughput-optimized message brokers.


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Ques: 7). An Amazon MQ network of brokers is what?

Answer:

The "network of brokers" function from Apache ActiveMQ is used by Amazon MQ for ActiveMQ. Multiple brokers joined together form a network of brokers. Network brokers exchange data on the customers and destinations that each broker hosts. These details are used by the brokers to move messages throughout the network. The brokers in an Amazon MQ network can either be single-instance brokers or active-standby brokers (each active broker in the network includes a standby node with shared storage that will take over in the event of an active node failure) (if the node fails, it will be unavailable until it is restarted). Each network broker has a distinct message store that is replicated across many AZs in a region. A single broker is always in charge of storing communications since nodes in the network pass messages to one another.

If you need horizontal scaling or high availability with quick reconnections in the event of broker failure, you should employ a network of brokers.


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Ques: 8). Who need to utilise Amazon MQ?

Answer:

For enterprise IT professionals, developers, and architects who are currently in charge of operating a message broker on-premises or in the cloud and wish to switch to a fully managed cloud service without having to rewrite the messaging code in their applications, Amazon MQ is a good option.


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Ques: 9). Does Amazon MQ adhere to regulations?

Answer:

Yes. Amazon MQ complies with PCI, SOC, and ISO requirements and is HIPAA-eligible.

You may use Amazon MQ to store and transport communications across healthcare systems, including messages containing protected health information, because it is HIPAA qualified (PHI). Because Amazon MQ complies with PCI DSS, you can process, store, or send payment information with it. Also accredited to ISO 9001, 27001, 27017, and 27018 standards are Amazon MQ. The protection of personally identifiable information and management of quality and information security in the cloud are attested to by some of the most well-known certifications in the world. Amazon MQ is SOC 1, 2, and 3 compliant, allowing you to get deep insight into the security processes and controls that protect customer data.


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Ques: 10). How do I keep track of the queues, topics, and broker instances?

Answer:

You can observe and analyse metrics for your broker instances, as well as your queues and topics, thanks to the integration between Amazon MQ and Amazon CloudWatch. Metrics may be viewed and analysed using the CloudWatch dashboard, the command line, the Amazon MQ console, or programmatically. Every minute, metrics are automatically gathered and published to CloudWatch.


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Ques: 11). When would I choose to manage ActiveMQ or RabbitMQ on Amazon EC2 myself vs using Amazon MQ?

Answer:

A managed message broker service is offered by Amazon MQ that handles all aspects of running your message broker, including installation, configuration, upkeep, and provisioning of the underlying infrastructure for high availability and durability. When you wish to offload operational overhead and related costs, you might want to think using Amazon MQ. Consider building and operating your message broker on Amazon EC2 directly if you want more power to tweak features and setups or to utilise unique plugins.


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Ques: 12). When should I use AWS IoT Message Broker instead of Amazon MQ?

Answer:

When using an open source messaging programme like ActiveMQ or other commercial message brokers, you may utilise Amazon MQ to offload operational overhead and related costs. When switching from for-profit brokers or open source brokers like ActiveMQ, you may utilise Amazon MQ to lower broker maintenance expenses, increase broker stability, and save on licence fees. In scenarios when you're creating new cloud-based applications employing microservices and need low latency, high availability, and message durability, Amazon MQ is also appropriate for application integration use cases. Industry-standard APIs like JMS and NMS as well as message protocols including AMQP, STOMP, MQTT, and WebSocket are supported by Amazon MQ.

When your use case involves IoT device telemetry, device management, device security, and IoT analysis, you can utilise AWS IoT Message Broker. For IoT sector clients connecting sizable device fleets and gathering telemetry data to transfer to native AWS services, the AWS IoT Message Broker is ideal. Industry-standard lightweight protocols including MQTT, HTTP, and MQTT over WebSocket are supported by AWS IoT Message Broker.

 

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Ques: 13). How do the various AWS services interact with Amazon MQ?

Answer:

Amazon MQ may be used by any application that utilises an AWS computing service, such as Amazon EC2, Amazon ECS, or AWS Lambda. Additionally connected to the following AWS services are Amazon MQ:

  • Monitoring metrics and generating alarms using Amazon CloudWatch
  • Publish logs from your Amazon MQ brokers to Amazon CloudWatch Logs using Amazon CloudWatch Logs.
  • AWS CloudTrail allows users to record, continuously track, and save Amazon MQ API calls.
  • Automate the process of constructing, updating, and deleting message brokers using AWS CloudFormation.
  • Service API authentication and authorisation using AWS Identity and Access Management (IAM)
  • Create and manage the keys required to encrypt your data using the AWS Key Management Service (KMS).


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Ques: 14). : Is there a service level agreement for Amazon MQ?

Answer:

Yes. During any monthly billing cycle, AWS shall make commercially reasonable efforts to ensure that Active/Standby ActiveMQ Brokers and RabbitMQ Clusters are available with a Monthly Uptime Percentage of at least 99.9%. (the "Service Commitment"). You may be entitled to a Service Credit if Amazon MQ fails to achieve the Monthly Uptime Percentage guarantee.

 

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Ques: 15). How is Amazon MQ billed to me?

Answer:

You just pay for what you use while using Amazon MQ. Standard data transport fees as well as fees for the use of the broker instance and storage are assessed. Our free tier for a year makes it simple to start with Amazon MQ.

 

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Ques: 16). What RabbitMQ plugins are offered for Amazon MQ?

Answer:

The management, shovel, federation, and consistent hash exchange plugins are all included in Amazon MQ for RabbitMQ.



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