Microsoft DevOps AZ-400 Practice Exam 2025 – Comprehensive Prep for Your Test

Question: 1 / 400

In Azure Service Bus, which feature needs to be enabled to guarantee first-in-first-out (FIFO) message delivery?

Set the Lock Duration setting to 10 seconds

Enable duplicate detection

Set the Max Size setting of the queue to 5 GB

Enable sessions

To guarantee first-in-first-out (FIFO) message delivery in Azure Service Bus, enabling sessions is the necessary feature. When sessions are enabled, each message is associated with a session identifier. This allows Azure Service Bus to group messages belonging to the same session together and ensures they are processed in the order they were received. Consequently, when a message is sent to a session-enabled queue, the Service Bus maintains the strict sequence of messages tied to that particular session.

In this context, sessions not only facilitate ordered delivery but also allow for message grouping and state management, providing a powerful mechanism for scenarios that require reliable order processing. Solving business problems that depend on maintaining the sequence of message processing can be effectively achieved by implementing sessions in Azure Service Bus queues or subscriptions.

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