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Develop message-based solutions
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Develop message-based solutions

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Questions and Answers

When should a solution architect/developer consider using Service Bus queues?

  • When the solution requires advanced messaging features like transactions and duplicate detection (correct)
  • When the solution prefers a low-cost queuing option
  • When the solution requires direct integration with Azure Blob storage
  • When the solution requires a simple queuing mechanism without advanced features

    • When should a solution architect/developer consider using Storage queues?

  • When the solution prefers a low-cost queuing option
  • When the solution requires advanced messaging features like transactions and duplicate detection
  • When the solution requires direct integration with Azure Blob storage
  • When the solution needs a simple queuing mechanism without advanced features (correct)

    • When should a solution architect/developer consider using Service Bus queues?

  • When the application wants to track progress for processing a message in the queue
  • When the solution needs to support automatic duplicate detection
  • When the application must store over 80 gigabytes of messages in a queue
  • When the solution requires guaranteed first-in-first-out (FIFO) ordered delivery (correct)

    • What is a suitable use case for Storage queues?

    <p>When the application must store over 80 gigabytes of messages in a queue</p> Signup and view all the answers

    In what scenario should Service Bus queues be considered?

    <p>When the solution needs to receive messages without having to poll the queue</p> Signup and view all the answers

    When is it appropriate to use Storage queues?

    <p>When the application wants to process messages as parallel long-running streams</p> Signup and view all the answers

    What type of message delivery do queues offer in Service Bus?

    <p>First In, First Out (FIFO) message delivery</p> Signup and view all the answers

    How do queues enable load-leveling in message processing?

    <p>Producers and consumers can send and receive messages at different rates</p> Signup and view all the answers

    What benefit does using queues provide in terms of system coupling?

    <p>Inherent loose coupling between producers and consumers</p> Signup and view all the answers

    Which languages can be used to write clients for sending and receiving messages in Service Bus queues?

    <p>C#, Java, Python, and JavaScript</p> Signup and view all the answers

    What are the two different modes in which Service Bus receives messages?

    <p>Receive and delete, Peek lock</p> Signup and view all the answers

    In which mode does Service Bus mark the message as consumed and return it to the consumer?

    <p>Receive and delete</p> Signup and view all the answers

    Why is 'Peek lock' mode suitable for applications that can't tolerate missing messages?

    <p>It allows the message to be unlocked and made available again if needed</p> Signup and view all the answers

    What does a topic and subscription provide in contrast to queues?

    <p>One-to-many form of communication in a publish and subscribe pattern</p> Signup and view all the answers

    How are messages sent to a topic and received from subscriptions in Service Bus?

    <p>Using clients written in C#, Java, Python, and JavaScript</p> Signup and view all the answers

    What is used to copy a subset of messages to the virtual subscription queue in Service Bus?

    <p>Subscription filters</p> Signup and view all the answers

    What type of properties can a filter expression operate on in Service Bus subscriptions?

    <p>System properties and custom application properties</p> Signup and view all the answers

    What is the purpose of a filter action in Service Bus subscriptions?

    <p>To perform certain modifications to message properties</p> Signup and view all the answers

    What is the outcome of defining a SQL filter expression on a subscription in Service Bus?

    <p>Messages are filtered based on the SQL expression</p> Signup and view all the answers

    How are topics and subscriptions created in Azure Service Bus?

    <p>Using Azure portal, PowerShell, CLI, or Resource Manager templates</p> Signup and view all the answers

    What is the advantage of using topics and subscriptions in Service Bus for message processing?

    <p>It allows scaling to large numbers of recipients</p> Signup and view all the answers

    Which mode of message processing in Service Bus is suitable for scenarios where the application can tolerate not processing a message if a failure occurs?

    <p>Receive and delete</p> Signup and view all the answers

    What does a Service Bus message consist of?

    <p>Binary payload section and two sets of properties</p> Signup and view all the answers

    How are messages routed to particular destinations in Service Bus?

    <p>Using a subset of broker properties such as To, ReplyTo, and CorrelationId</p> Signup and view all the answers

    What is the purpose of the To property in Service Bus messages?

    <p>Reserved for future use</p> Signup and view all the answers

    What is the role of user properties in Service Bus messages?

    <p>A collection of key-value pairs defined and set by the application</p> Signup and view all the answers

    What is the suggested format for the ContentType property values when describing the payload?

    <p>MIME content-type description according to IETF RFC2045</p> Signup and view all the answers

    How does the .NET Framework version of the Service Bus API support creating BrokeredMessage instances?

    <p>By passing arbitrary .NET objects into the constructor</p> Signup and view all the answers

    What does the AMQP protocol do to serialize objects?

    <p>Serializes objects into an AMQP object</p> Signup and view all the answers

    What is the suggested approach for applications to take explicit control of object serialization when using AMQP?

    <p>Turn their object graphs into streams before including them into a message</p> Signup and view all the answers

    What is the payload type when in transit or stored inside of Service Bus?

    <p>An opaque, binary block</p> Signup and view all the answers

    What is the primary recommendation for applications that implement routing?

    <p>Routing should be based on user properties and not lean on the To property</p> Signup and view all the answers

    What does the ContentType property enable applications to describe?

    <p>The payload</p> Signup and view all the answers

    What does the legacy SBMP protocol use to serialize objects?

    <p>Default binary serializer, or with a serializer that is externally supplied</p> Signup and view all the answers

    What does setting ReplyToSessionId enable in Service Bus?

    <p>Enables the publisher to wait for a session with the given SessionId to materialize</p> Signup and view all the answers

    What is the recommended approach for applications implementing routing in Service Bus?

    <p>Implement routing based on user properties</p> Signup and view all the answers

    How can routing across namespaces be performed in Service Bus?

    <p>Using autoforward chaining and topic subscription rules</p> Signup and view all the answers

    What property contains the address of the queue to receive replies in a simple request/reply pattern in Azure Service Bus?

    <p>To</p> Signup and view all the answers

    In a multicast request/reply pattern in Azure Service Bus, what can a set of discovery responses be distributed to if ReplyTo points to a topic?

    <p>An audience</p> Signup and view all the answers

    What feature in Azure Service Bus enables multiplexing of streams of related messages through a single queue or subscription?

    <p>SessionId</p> Signup and view all the answers

    In a simple request/reply pattern in Azure Service Bus, what property does the consumer copy the MessageId of the handled message into for the reply message?

    <p>CorrelationId</p> Signup and view all the answers

    What is the maximum size a queue message can be in Azure Queue Storage?

    <p>64 KB</p> Signup and view all the answers

    What is the primary purpose of queues in Azure Queue Storage?

    <p>Create a backlog of work to process asynchronously</p> Signup and view all the answers

    How do you access messages in Azure Queue Storage?

    <p>Authenticated calls using HTTP or HTTPS</p> Signup and view all the answers

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