November 01, 2022

Top 20 AWS Simple Notification Service (SNS) Interview Questions and Answers


                            A web service called Amazon Simple Notification Service (Amazon SNS) makes it simple to set up, run, and transmit notifications from the cloud. It gives developers the ability to publish messages from an application and instantly distribute them to subscribers or other apps in a highly scalable, flexible, and economical manner. For developers, it is intended to make web-scale computing simpler. The "publish-subscribe" (pub-sub) communications paradigm is used by Amazon SNS, and notifications are sent to clients using a "push" technique to avoid the need for recurring checks or "polls" for new data and updates. With pay-as-you-go pricing, no maintenance or management costs, and straightforward APIs requiring no upfront effort, Amazon SNS offers developers a simple way to integrate a potent notification system with their apps.


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Ques. 1): What are the key features that distinguish Amazon SNS as a flexible choice for developing and integrating loosely-coupled, distributed applications?

Answer:

  • Push-based, immediate delivery (no polling)
  • Simple APIs and straightforward application integration
  • Message delivery flexibility across several transport protocols
  • Pay-as-you-go strategy that is affordable and free of upfront charges
  • AWS Management Console on the web offers a straightforward point-and-click user interface.


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Ques. 2): How does the Amazon SNS function?

Answer:

    With Amazon SNS, getting started is quite simple. Prior to posting messages and enabling users to subscribe for alerts, developers must first build a "topic" that serves as a "access point" and identifies a certain subject or event type. When a topic is formed, the subject owner can describe its policies, such as who is allowed to publish messages or subscribe to notifications, as well as which notification protocols (such as HTTP/HTTPS, email, or SMS) will be supported. Clients that subscribe to a subject or are subscribed by the topic owner are interested in getting alerts from relevant topics. The protocol and end-point (URL, email address, etc.) where notifications should be sent are specified by subscribers. Publishers that have information or updates for their subscribers can post a message to the subject, which causes Amazon SNS to send the message to all relevant subscribers right away.

     

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    Ques. 3): What distinguishes Amazon SNS from 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. We advise you 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. Microservices, distributed systems, and serverless applications may be scaled and decoupled using Amazon SQS and SNS, and dependability can be increased. 

       

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      Ques. 4): What distinguishes Amazon SNS from 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. We advise you 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. The relaying of time-sensitive events to mobile applications and devices is another example of how Amazon SNS is used. Developers that create applications that depend on real-time events might benefit greatly from using Amazon SNS since it is both extremely dependable and scalable.


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        Ques. 5): What are the various notice delivery formats and transports?

        Answer:

          SQS - Users have the option of specifying a FIFO queue or a SQS standard as the endpoint, and Amazon SNS will enqueue a notification message to the chosen queue (which subscribers can then process using SQS APIs such as ReceiveMessage, DeleteMessage, etc.).

          HTTP, HTTPS - When registering for a subscription, subscribers must select a URL; alerts will be sent through an HTTP POST to the supplied URL.

          Email-JSON - Messages are delivered to registered addresses by email or email-JSON. Email delivers text-based email, whereas Email-JSON sends alerts as a JSON object.

          SQS – Users can choose "SQS" as the endpoint, which instructs Amazon SNS to enqueue a notification message to a SQS standard queue (which subscribers can then process using SQS APIs such as ReceiveMessage, DeleteMessage, etc.).

          SMS - Text communications are transmitted as SMS to registered phone numbers. 


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          Ques. 6): Can other AWS services be utilised with Amazon SNS?

          Answer:

            Other AWS services like Amazon SQS, Amazon EC2, and Amazon S3 can be combined with Amazon SNS. Here is an illustration of how a workflow system for order processing employs Amazon SNS along with Amazon EC2, SQS, and SimpleDB. In this workflow system, whenever a transaction takes place or an order moves through the order processing pipeline, messages are delivered between the application components. When a consumer puts an order, the transaction is first logged in Amazon SimpleDB before being sent to a payment processor, which deducts the customer's credit card or bank account, through an application running on Amazon EC2. An order confirmation message is then sent to an Amazon SNS topic after being authorized. The merchant, the client, and the supply chain partners are all subscribers to the subject in this scenario through Email/HTTP, and alerts provided by Amazon SNS for that topic may immediately inform them all that the payment processing was successful. An order processing system running on EC2 may also be orchestrated via notifications, where alerts provided over HTTP can start real-time processing in associated components like an inventory system or a shipping service. All sent notifications are maintained in an Amazon SQS queue through the integration of Amazon SNS and Amazon SQS, where they are later analysed by an auditing application.

             

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            Ques. 7): Will a certain originating number send SMS notifications?

            Answer:

              Numbers will be used by Amazon SNS according to your account's settings. A dedicated short code will be used first, then one of the specialised long codes. Amazon SNS will resort to utilising a common set of numbers to send SMS notifications if you don't have dedicated numbers. While sending messages to a certain destination phone number, Amazon SNS tries to utilise the same number when utilising the shared set. Sticky Sender ID is the name for this. However, a different number could be chosen based on numerous factors including network circumstances and available throughput.

              You can reserve dedicated long numbers or dedicated short codes to manage the originating identity that Amazon SNS uses to transmit messages. You may make it simpler for your audience to understand that your company is the source of your communications by reserving one or more numbers. 

               

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              Ques. 8): What characteristics are included in the new Worldwide SMS capability?

              Answer:

                With Amazon SNS, you may send SMS (text) messages to more than 200 countries without the receivers' express consent as previously. If local law or regulations prohibit you from sending SMS messages to a recipient's phone number, you must first get their consent. Additionally, you may now label your SMS messages as Transactional or Promotional to optimise for cost-savings or dependable delivery, respectively. To prevent unintentional overruns, you may also define expenditure limitations at the account and message levels. 

                 

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                Ques. 9): How would a developer build up an Amazon SQS queue to get alerts from Amazon SNS?

                Answer:

                  A developer should subscribe to a topic specifying "SQS" as the transport and a valid SQS standard queue as the end-point in order to have Amazon SNS transmit notifications to a SQS queue. The owner of the SQS queue must subscribe the SQS queue to the Topic in order for Amazon SNS to correctly deliver messages to the queue and enable the SQS queue to receive alerts from Amazon SNS.

                  Nothing further is necessary if the user already controls the Amazon SNS topic being subscribed to and the SQS queue receiving the alerts. Any message posted to the subject will be sent automatically to the designated SQS queue. Amazon SNS will seek a clear confirmation of the subscription request if the person who owns the SQS queue is not the topic's owner. 

                   

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                  Ques. 10): How many times will each message be delivered to subscribers?

                  Answer:

                    Although each message will typically only ever be delivered once to your application, the dispersed nature of Amazon SNS and fluctuating network circumstances may occasionally cause multiple messages to be received at the subscriber end. Application designers should make sure that processing a message more than once does not result in any mistakes or inconsistencies. 

                     

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                    Ques. 11): Describe 10DLC.

                    Answer:

                      When delivering SMS to customers in the US, you can utilise the 10-digit long code 10DLC as your originating identification. It can handle up to 100 text messages per second in throughput (TPS). The throughput that is allotted to you is not decided by AWS. Instead, when you sign up for the 10DLC, US carriers assign you throughput. Carriers demand that you supply details about your business and its use cases in order to use 10DLC numbers (also called 10DLC campaigns).

                      Your business and 10DLC campaigns must be registered in the Amazon Pinpoint dashboard. Once you've successfully registered and a 10DLC is active on your account, You may send SMS using Amazon SNS using this number as the originating identification. Through The Campaign Registry (TCR), a third-party central organisation that carriers utilise to verify brand identity and 10DLC campaign specifics, Amazon assists the registration procedure. 

                       

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                      Ques. 12): What are FIFO topics on SNS?

                      Answer:

                        SNS FIFO topics allow users to publish a message to a topic such that it may be sent to a number of subscribing endpoints, just as conventional SNS topics. SNS FIFO topics are the best option when the distribution of such messages to subscribers has to happen once, in order (first-in-first-out), and you want SNS to handle it. To offer consistent end-to-end message ordering for distributed applications, Amazon SNS FIFO topics send ordered messages to Amazon Simple Queue Service (Amazon SQS) FIFO queues. You may now make your communications architecture simpler and demand less work to execute your high volume, regularly ordered transactions. Example use cases include bank transaction logs, stock tickers, flight trackers, price updates, news broadcasting, and inventory management.

                         

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                        Ques. 13): Does Amazon SNS comply with HIPAA?

                        Answer:

                          Amazon SNS is a HIPAA qualified Service under the AWS HIPAA compliance programme, yes. You may now utilise Amazon SNS to create HIPAA-compliant apps if your Business Associate Agreement (BAA) with AWS has been successfully completed. Contact us for additional information if you don't have a BAA or if you have any inquiries about utilising AWS for your HIPAA-compliant apps. Please be aware that the SMS and mobile push notification features of Amazon SNS are not HIPAA-compliant and cannot be used to communicate protected health information (PHI). 

                           

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                          Ques. 14): Can I send 10DLC messages using small URLs?

                          Answer:

                            No. The usage of short URLs offered by sites like bit.ly is not permitted by carriers. Use complete URLs that correspond to your company's domain, according to AWS. As an alternative, you may employ URL shortening providers that offer vanity or custom domains that are directly associated with the brand delivering the messages. Make sure to include these URL samples in the sample messages when registering for the 10DLC campaign. 

                             

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                            Ques. 15): SNS Mobile Push: What Is It?

                            Answer:

                              You may use SNS Mobile Push to send push notifications to Android smartphones in China via Baidu Cloud Push, as well as to Apple, Google, Fire OS, and Windows devices. Without launching the programme, a mobile application that has been installed can instantly alert its users to an occurrence by throwing up a notice. For instance, if you download a sports app and turn on push notifications, the app will be able to provide you the most recent score of your preferred team even while it is not open. When you respond positively to the message, the app runs and displays further information.Users’ experiences are similar to receiving an SMS, but with enhanced functionality and at a fraction of the cost.

                               

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                              Ques. 16): How does the owner provide or remove authorization to post or subscribe to a topic?

                              Answer:

                                Developers may easily add and remove rights for a subject using the AddPermission and RemovePermission APIs. However, users should utilise access control rules to manage permissions for conditional access and more sophisticated use cases. Using the AWS Management Console is the simplest method for managing permissions. 

                                 

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                                Ques. 17): How does Mobile Push interact with SNS topics?

                                Answer:

                                  Any supported push notification platform as well as any other endpoint type, such as SMS or email, can allow subscriptions for SNS topics. Every endpoint that has subscribed to the subject will get identical copies of any notifications you post to it. The publish will fail if it exceeds the maximum payload size set by the relevant push notifications platform if you utilise platform-specific payloads to determine the precise payload delivered to each push platform. 


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                                  Ques. 18): If my SMS messages are not delivered, am I still charged?

                                  Answer:

                                    If the destination carrier detects that you attempted to send a message to an invalid phone number, you can be charged for unsuccessful delivery. Numerous situations can result in a phone number being invalid, including when it doesn't exist, the recipient's account doesn't have enough credit, or the destination number is a landline. 

                                     

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                                    Ques. 19): Direct addressing is what? How does it function?

                                    Answer:

                                      Instead of delivering the same message to every subscriber to a topic, direct addressing enables you to send alerts directly to a particular endpoint. If you want to send each recipient exactly focused communications, this is helpful. SNS establishes a corresponding endpoint for device tokens when you register them with it. Similar to publishing to a topic, you may publish to the token endpoint. You have the option to directly publish your notification's text or a platform-specific payload that makes use of capabilities unique to that platform, such updating your app's badge count. Only endpoints that receive push notifications are presently able to use direct addressing.

                                       

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                                      Ques. 20): Which versions of Windows Push Notifications is Amazon SNS compatible with?

                                      Answer:

                                        All push notification kinds provided by Microsoft WNS and MPNS, including toast, tile, badge, and raw notifications, are supported by SNS. To select the notification type to utilise, use the TYPE message property. SNS will automatically choose toast notifications for Windows platforms when you use preset payloads to deliver the same message to all mobile platforms. When using platform-specific payloads, you must provide a notification type for Windows platforms. 


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                                        Top 20 AWS SQS Interview Questions and Answers


                                         

                                        Ques: 1). What distinguishes Amazon SQS from Amazon MQ?

                                        Answer:

                                        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. We advise you 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.

                                         

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                                        Ques: 2). What distinguishes Amazon SQS from Amazon Kinesis Streams?

                                        Answer:

                                        For storing messages as they go between applications or microservices, Amazon SQS provides a dependable, highly scalable hosted queue. It transfers data among various application components and aids in decoupling them. Common middleware components like dead-letter queues and poison-pill management are offered by Amazon SQS. Any programming language that the AWS SDK supports can access it, and it also offers a general web services API. Standard and FIFO queues are both supported by Amazon SQS.

                                        Real-time processing of streaming large data and the ability to read and replay records to numerous Amazon Kinesis Applications are made possible by Amazon Kinesis Streams. The Amazon Kinesis Client Library (KCL) makes it simpler to create numerous apps that read from the same Amazon Kinesis stream by sending all records for a particular partition key to the same record processor (for example, to perform counting, aggregation, and filtering).

                                         

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                                        Ques: 3). Dead-letter queues: what are they?

                                        Answer:

                                        If the consumer application for the source queue is unable to effectively consume the messages, the source queue may send the messages to a dead-letter queue on Amazon SQS. You can manage the life cycle of unconsumed messages and handle message consumption errors more easily with dead-letter queues. To identify problems with consumer applications, you may create an alert for any messages that are delivered to a dead-letter queue, go through the logs for any errors that led to their delivery to the queue, and check the substance of the messages. You can redrive the messages from your dead-letter queue to the source queue after your consumer application has been restored.


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                                        Ques: 4). How dependable is the data storage in Amazon SQS?

                                        Answer:

                                        In order to prevent message inaccessibility due to a single computer, network, or Availability Zone (AZ) failure, Amazon SQS stores all message queues and messages in a single, highly-available AWS region with many redundant Availability Zones (AZs). See Regions and Availability Zones in the Amazon Relational Database Service User Guide for further details.

                                        AWS Identity and Access Management (IAM) rules are similar to the policies used by Amazon SQS's resource-based permissions system in that both employ policies defined in the same language. For instance, both use variables.

                                        The Transport Layer Security (TLS) and HTTP over SSL (HTTPS) protocols are supported by Amazon SQS. Most clients can automatically negotiate to use newer versions of TLS without any code or configuration change. Amazon SQS supports versions 1.0, 1.1, and 1.2 of the Transport Layer Security (TLS) protocol in all regions.

                                         

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                                        Ques: 5). Do you provide message purchasing using Amazon SQS?

                                        Answer:

                                        Yes. First-in, first-out (FIFO) queues maintain the precise sequence of messages delivered and received. You don't need to provide sequencing information in your messages if you utilise a FIFO queue. Standard queues include a loose-FIFO feature that makes an effort to maintain the message order. Receiving messages in the precise sequence they are sent is not guaranteed, however, because conventional queues are intended to be immensely scalable utilising a widely dispersed architecture.

                                         

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                                        Ques: 6). What advantages does Amazon SQS have over custom-built or pre-packaged message queuing systems?

                                        Answer:

                                        Compared to developing your own message queue management software or utilising open-source or commercial message queuing solutions, which take a substantial amount of setup time, Amazon SQS offers a number of benefits.

                                        These options demand continuing system management and hardware maintenance resources. The requirement for redundant message storage, which guarantees that messages are not lost in the event of hardware failure, further increases the complexity of creating and operating these systems.

                                        Amazon SQS, in comparison, needs very minimal configuration and no expense in terms of administration. On a huge scale, Amazon SQS processes billions of messages every day. Without any configuration, you may adjust the amount of traffic you send to Amazon SQS. Amazon SQS also provides extremely high message durability, giving you and your stakeholders added confidence.


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                                        Ques: 7). Is Amazon SQS compatible with other AWS services?

                                        Answer:

                                        Yes. By combining Amazon SQS with computing services like Amazon EC2, Amazon Elastic Container Service (ECS), and AWS Lambda as well as storage and database services like Amazon Simple Storage Service (Amazon S3) and Amazon DynamoDB, you can increase the scalability and flexibility of your applications.


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                                        Ques: 8). What is lengthy polling for Amazon SQS?

                                        Answer:

                                        You may obtain messages from your Amazon SQS queues using extended polling. Long polling doesn't respond until a message enters the message queue or the long poll times out, whereas conventional short polling responds, even if the message queue being polled is empty.

                                        It is cheap to collect messages from your Amazon SQS queue as soon as they become available thanks to long polling. If you employ lengthy polling, you can cut down on the amount of empty receives, which might lower the cost of utilising SQS.


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                                        Ques: 9). How can I monitor and control the expenses related to my Amazon SQS queues?

                                        Answer:

                                        Utilizing cost allocation tags, you may label and monitor your queues for resource and expense control. A key-value pair makes up a tag, which is a type of metadata label. You may, for instance, categorise and track your expenditures depending on the cost centres you use to tag your queues.


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                                        Ques: 10). What advantages does SSE have for Amazon SQS?

                                        Answer:

                                        Sensitive data may be sent in encrypted queues using SSE. Using keys maintained by the AWS Key Management Service, SSE secures the contents of messages in Amazon SQS queues (AWS KMS). As soon as messages are received by Amazon SQS, SSE encrypts them. The messages are stored in encrypted form and Amazon SQS decrypts messages only when they are sent to an authorized consumer.


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                                        Ques: 11). What distinguishes Amazon Simple Notification Service (SNS) from Amazon SQS?

                                        Answer:

                                        Applications can use Amazon SNS to deliver time-sensitive messages to a large number of subscribers instead of periodically checking or polling for updates. A message queuing service called Amazon SQS may be used to separate the sending and receiving parts of distributed applications so that messages can be exchanged using a polling mechanism.


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                                        Ques: 12). What number of copies will I get of a message?

                                        Answer:

                                        FIFO queues are made to ensure that no messages are ever introduced twice. In some circumstances, though, your message producer could add duplicates. For instance, if the producer sends a message, doesn't get a reply, and then sends the identical message again. The deduplication mechanism offered by the Amazon SQS APIs stops your message producer from sending duplicate messages. Within a 5-minute deduplication interval, the message producer's duplicates are eliminated.

                                        You could occasionally get a duplicate copy of a message for regular queues (at-least-once delivery). If you utilise a normal queue, you must create idempotent apps (that is, they must not be affected adversely when processing the same message more than once).

                                         

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                                        Ques: 13). How are unprocessable messages handled by Amazon SQS?

                                        Answer:

                                        Dead letter queues in Amazon SQS may be set up using the console or the API to accept messages from other source queues. You must use RedriveAllowPolicy to specify the correct permissions for the dead letter queue redrive when configuring a dead letter queue.

                                        The dead-letter queue redrive permission's parameters are included in RedriveAllowPolicy. As a JSON object, it specifies which source queues are permitted to declare dead-letter queues.

                                        After creating a dead letter queue, messages are sent to it if the processing cannot be finished within a certain number of attempts. Dead letter queues can be used to collect unprocessable messages for subsequent examination.

                                         

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                                        Ques: 14). Does message metadata support Amazon SQS?

                                        Answer:

                                        Yes. A message from Amazon SQS may have up to 10 metadata characteristics. The substance of a message may be distinguished from the metadata that describes it using message attributes. Because your apps don't have to analyse a complete message before knowing how to process it, information is processed and stored more quickly and efficiently.

                                        Name-type-value triples are used for Amazon SQS message characteristics. The available types are numeric, binary, and string (including integer, floating-point, and double).


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                                        Ques: 15). Do I need to update my application in order to use the Java version of the AmazonSQSBufferedAsyncClient?

                                        Answer:

                                        No. A drop-in replacement for the current AmazonSQSAsyncClient is provided by the AmazonSQSBufferedAsyncClient for Java.

                                        Your application will gain the advantages of automated batching and prefetching if you update it to utilise the most recent AWS SDK and switch your client to use the AmazonSQSBufferedAsyncClient for Java instead of the AmazonSQSAsyncClient.


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                                        Ques: 16). What timeout setting should I use for my long-poll?

                                        Answer:

                                        A long-poll timeout should generally be limited to 20 seconds. Set your long-poll timeout as high as you can since it will result in fewer empty ReceiveMessageResponse objects being returned.

                                        Set a shorter long-poll timeout, as low as 1 second, if the 20-second limit is insufficient for your application.

                                        By default, all AWS SDKs operate with polls that last 20 seconds. You might need to change your Amazon SQS client to enable longer queries or to use a shorter long-poll timeout if you don't use an AWS SDK or if you set your AWS SDK to explicitly have a lower timeout.


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                                        Ques: 17). How can I set the Amazon SQS limit message size?

                                        Answer:

                                        Use the console or the SetQueueAttributes method to set the MaximumMessageSize property to the desired value. The maximum amount of bytes that an Amazon SQS message may contain is specified by this parameter. Set this attribute's value to anything between 1 KB (1,024 bytes) to 262,144 bytes (256 KB).

                                        Make advantage of the Amazon SQS Extended Client Library for Java to transmit messages bigger than 256 KB. With the help of this library, you are able to send an Amazon SQS message with a reference to a message payload in Amazon S3 that is up to 2 GB in size.


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                                        Ques: 18). Why do the actions of ReceiveMessage and DeleteMessage exist separately?

                                        Answer:

                                        Whether or not you get a message that Amazon SQS returns to you, the message remains in the message queue. The deletion request confirms that you have finished processing the message, and it is your responsibility to delete the message.

                                        If you don't remove the message, Amazon SQS will resend it when it gets a new request to accept it.

                                         

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                                        Ques: 19). Is it possible to remove every message from a message queue without removing the queue itself?

                                        Answer:

                                        Yes. The PurgeQueue action allows you to remove every message from an Amazon SQS message queue.

                                        All of the messages that have already been sent to a message queue are erased when you purge it. There is no need to change the message queue's configuration because your message queue and its properties are still there. Use the DeleteMessage or DeleteMessageBatch actions to specifically delete particular messages.


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                                        Ques: 20). How do messaging groups work?

                                        Answer:

                                        Within a FIFO queue, messages are organised into discrete, sequential "bundles." All messages are sent and received in exact sequence for each message group ID. Messages with various message group ID values, nevertheless, could be sent and received out of chronological order. A message must be linked to a message group ID. The action fails if a message group ID is not supplied.

                                        If messages with the same message group ID are transmitted to a FIFO queue by several hosts (or separate threads on the same host), Amazon SQS distributes the messages in the order in which they arrive for processing.


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                                        Top 20 AWS QuickSight Interview Questions and Answers

                                         

                                                                Amazon QuickSight, a very quick, simple-to-use, cloud-powered business analytics service. All employees within an organisation can easily create visualisations, carry out ad-hoc analysis, and quickly gain business insights from their data with the help of AWS QuickSight. This can be done anytime, anywhere, and on any device. Access on-premises databases like SQL Server, MySQL, and PostgreSQL, upload CSV and Excel files, connect to SaaS programmes like Salesforce, and easily find your AWS data sources like Amazon Redshift, Amazon RDS, Amazon Aurora, Amazon Athena, and Amazon S3. With the help of a powerful in-memory engine, QuickSight allows businesses to grow their business analytics capabilities to hundreds of thousands of users while providing quick and responsive query performance (SPICE).

                                         

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                                        Ques: 1).  Can you describe SPICE?

                                        Answer:

                                        The "SPICE" super-fast, parallel, in-memory calculation engine is used in the construction of Amazon QuickSight. Built specifically for the cloud, SPICE runs interactive queries on massive datasets and provides quick results by combining columnar storage, in-memory technologies made possible by the newest hardware advancements, and machine code generation. With the support of SPICE, you can do complex calculations to get the most out of your study without having to worry about provisioning or managing infrastructure. Until a user manually deletes data, it is persistent in SPICE. SPICE also enables QuickSight to grow to hundreds of thousands of users who can all concurrently undertake quick interactive analysis across a wide range of AWS data sources, and it replicates data automatically for high availability.


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                                        Ques: 2). With Amazon QuickSight, how can I make an analysis?

                                        Answer:

                                        Making an analysis is straightforward. Within your AWS account, Amazon QuickSight automatically finds data in well-known AWS data repositories. Simply target one of the found data sources at Amazon QuickSight. You can specify the connection information of the source to connect to another AWS data source that is not in your AWS account or in a different zone. After that, pick a table and begin examining your data. Additionally, you may upload CSV and spreadsheet files, and Amazon QuickSight can be used to examine your data. Start by choosing the data fields you wish to examine, dragging the fields into the visual canvas, or performing a combination of these two activities. Amazon QuickSight will automatically select the appropriate visualization to display based on the data you’ve selected.


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                                        Ques: 3). If QuickSight is running in the background of a browser, will a Reader be charged?

                                        Answer:

                                        No, there won't be any use fees if Amazon QuickSight is active in a background tab. Only when there is explicit Reader action on the QuickSight web application does a session start. No further sessions (beyond those started when the Reader was active on the window or tab) will be charged if the QuickSight page is minimised or moved to the background until the Reader interacts with QuickSight once again.


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                                        Ques: 4). Is Amazon QuickSight compatible with my mobile device?

                                        Answer:

                                        For quick access to your data and insights so that you can make choices while you're out and about, use the QuickSight mobile applications (available on iOS and Android). Utilize your dashboards to browse, search, and take action. Dashboards can be added to Favorites for fast access. Using dig downs, filters, and other methods, explore your data. Any mobile device with a web browser may be used to access Amazon QuickSight.


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                                        Ques: 5). How can I get access to my AWS data sources data?

                                        Answer:

                                        Your AWS data sources that are accessible in your account and have your approval are effortlessly discovered by Amazon QuickSight. You may start viewing the data and creating visualisations right now. By supplying connection information for such sources, you may also explicitly connect to additional AWS data sources that are not in your account or in a different region.


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                                        Ques: 6). Can I use JDBC or ODBC to connect to hosted or local databases and specify the AWS region?

                                        Answer:

                                        Yes. Customers are urged to utilise the area where your data is housed for better performance and user interaction. Only the AWS region of the Amazon QuickSight endpoint to which you are connected is used by the auto discovery function of Amazon QuickSight to identify data sources.


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                                        Ques: 7). Row-level security: what is it?

                                        Answer:

                                        With row-level security (RLS), QuickSight dataset owners may restrict access to data at the row level based on the user's rights while interacting with the data. Users of Amazon QuickSight need to maintain one set of data and apply the proper row-level dataset rules to it with RLS. These guidelines will be enforced by all connected dashboards and analytics, making it easier to manage datasets and eliminating the need to keep separate datasets for users with various levels of data access privileges.

                                         

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                                        Ques: 8). Who are QuickSight's "Authors" and "Readers"?

                                        Answer:

                                        A person who can connect to data sources (inside or outside of AWS), produce graphics, and evaluate data is known as a QuickSight Author. Authors may publish dashboards with other account users and construct interactive dashboards utilising sophisticated QuickSight features like parameters and computed fields.

                                        A user that consumes interactive dashboards is known as a QuickSight Reader. Using a web browser or mobile app, readers may log in using the desired authentication method for their company (QuickSight username/password, SAML portal, or AD auth), view shared dashboards, filter data, dig down to details, or export data as a CSV file. Readers are not allotted any SPICE capacity.

                                        It is possible to grant certain end users access to QuickSight as Readers. Reader price is only valid for manual session interactions. If, in its discretion, it would discovers that you are using reader sessions for other purposes, it has the right to charge the reader at the higher monthly author fee (e.g., programmatic or automated queries).


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                                        Ques: 9). Who is a QuickSight “Admin”? Can I make an Author or Reader an Admin?

                                        Answer:

                                        A person who has the ability to manage QuickSight users, account-level preferences, and buy SPICE capacity and yearly subscriptions for the account is known as a QuickSight Admin. Administrators have access to all QuickSight writing features. If necessary, administrators can also upgrade accounts from Standard Edition to Enterprise Edition.

                                        Authors and Readers of Amazon QuickSight can at any moment become Admins.


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                                        Ques: 10). Can more users be invited by Qucksight "Authors" or "Readers"?

                                        Answer:

                                        No, QuickSight Authors and Readers are the only user categories that are unable to modify account permissions or extend an invitation to other users. One may acquire SPICE capacity and yearly subscriptions for the account as well as manage QuickSight users and account-level options using the Admin user that QuickSight gives. Administrators have access to all QuickSight writing features. If necessary, administrators can also upgrade accounts from Standard Edition to Enterprise Edition.


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                                        Ques: 11). My data's source is not in a tidy format. How should the data be formatted and transformed before visualisation?

                                        Answer:

                                        You can prepare data that isn't ready for visualisation using Amazon QuickSight. The connection dialog's "Edit/Preview Data" button should be selected. To format and alter your data, Amazon QuickSight includes a number of features. You can alter data types and alias data fields. You can use drag and drop to conduct database join operations and built-in filters to subset your data. Using mathematical operations and built-in functions like conditional statements, text, numerical, and date functions, you can also build calculated fields.


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                                        Ques: 12). Can QuickSight dashboards be displayed and refreshed scriptedly on monitors or other big displays using my QuickSight Reader account?

                                        Answer:

                                        The reader price for Amazon QuickSight is applicable to interactive data consumption by end users inside an enterprise. It is advisable that using an Author account to adhere to the QuickSight Reader's fair use standards for automated refresh and programmatic access.


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                                        Ques: 13). A recommended visualisation is what? How are suggestions generated by Amazon QuickSight?

                                        Answer:

                                        A built-in recommendation engine in Amazon QuickSight offers you potential representations depending on the characteristics of the underlying datasets. Suggestions act as potential first or next steps in an analysis, eliminating the time-consuming job of querying and comprehending your data's structure. The recommendations will change as you work with more precise data to reflect the subsequent actions that are appropriate for your current research.


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                                        Ques: 14). How does SageMaker's interaction with QuickSight work?

                                        Answer:

                                        Connecting the data source from which you wish to pull data is the first step. Once you've established a connection to a data source, choose "Augment using SageMaker." The next step is to choose the model you wish to use from a list of SageMaker models in your AWS account and supply the schema file, which is a JSON-formatted file containing the input, output, and run-time parameters. Compare the columns in your data collection with the input schema mapping. When you're finished, you may run this task and begin the inference.


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                                        Ques: 15). What types of visualizations are supported in Amazon QuickSight?

                                        Answer:

                                        Amazon QuickSight supports assorted visualizations that facilitate different analytical approaches:

                                        • Comparison and distribution
                                        • Bar charts (several assorted variants)
                                        • Changes over time
                                        • Line graphs
                                        • Area line charts
                                        • Correlation
                                        • Scatter plots
                                        • Heat maps
                                        • Aggregation
                                        • Pie graphs
                                        • Tree maps
                                        • Tabular
                                        • Pivot tables

                                         

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                                        Ques: 16). How do stories work?

                                        Answer:

                                        Stories act as walking tours of certain analyses. In order to facilitate cooperation, they are used to communicate significant ideas, a thinking process, or the development of an analysis. They may be built in Amazon QuickSight by recording and annotating particular analysis states. Readers of the tale are directed to the analysis when they click on a story image, where they can further investigate on their own.


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                                        Ques: 17). Which data sources can I use with Amazon QuickSight?

                                        Answer:

                                        AWS data sources including Amazon RDS, Amazon Aurora, Amazon Redshift, Amazon Athena, and Amazon S3 are all accessible through connections. Additionally, you may connect to on-premises databases like SQL Server, MySQL, and PostgreSQL, upload Excel spreadsheets or flat files (CSV, TSV, CLF, and ELF), and import data from SaaS programmes like Salesforce.


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                                        Ques: 18). How can I control who may access Amazon QuickSight?

                                        Answer:

                                        By default, you are given administrator rights when you establish a new Amazon QuickSight account. Whoever invites you assigns you either an ADMIN or a USER role if they want you to utilise Amazon QuickSight. If you have the ADMIN position, you may also buy yearly subscriptions, SPICE capacity, and create and remove user accounts in addition to utilising the service.

                                        Sending an email invitation to the user using an in-app interface allows you to establish a user account. The user then completes the account creation process by choosing a password and logging in.


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                                        Ques: 19). In what ways can I establish a dashboard?

                                        Answer:

                                        Dashboards are groups of visual displays that are grouped and made visible at once, such as tables and visualisations. By selecting the sizes and layouts of the visualisations in an analysis, you may create a dashboard using Amazon QuickSight, which you can then share with a group of people inside your company.


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                                        Ques: 20). What does "private VPC access" entail in regard to Amazon QuickSight?

                                        Answer:

                                        This functionality is for you if you have data in AWS (perhaps in Amazon Redshift, Amazon Relational Database Service (RDS), or on EC2) or locally on Teradata or SQL Server servers on servers without public connection. Elastic Network Interface (ENI) is used by Private VPC (Virtual Private Cloud) Access for QuickSight for secure, private connection with data sources in a VPC. You may also utilise AWS Direct Connect to establish a private, secure connection with your on-premises resources.

                                         

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