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 (B)</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 (C)</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 (A)</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 (A)</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 (D)</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 (C)</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 (C)</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 (A)</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 (D)</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 (A)</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 (B)</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 (A)</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 (C)</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 (A)</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 (B)</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 (C)</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 (A)</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 (B)</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 (B)</p> Signup and view all the answers

What does a Service Bus message consist of?

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

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

<p>Reserved for future use (C)</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 (A)</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 (D)</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 (D)</p> Signup and view all the answers

What does the AMQP protocol do to serialize objects?

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

What does the ContentType property enable applications to describe?

<p>The payload (D)</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 (D)</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 (D)</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 (C)</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 (C)</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 (B)</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 (B)</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 (D)</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 (D)</p> Signup and view all the answers

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

<p>64 KB (B)</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 (D)</p> Signup and view all the answers

How do you access messages in Azure Queue Storage?

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

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