Exam AZ-204 topic 6 question 39 discussion

Actual exam question from Microsoft's AZ-204

Question #: 39
Topic #: 6

HOTSPOT -

You have an Azure Service Bus namespace that contains a topic named Topic1.

You plan to create a subscription named Sub1 to Topic1. In Sub1, you plan to filter messages from Topic1 based on their system properties and apply an action that will annotate each filtered message.

You need to configure the filtering.

How should you configure the filtering? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

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Suggested Answer:

by 21c5438 at Jan. 18, 2025, 3:59 p.m.

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21c5438

Highly Voted 4 months, 3 weeks ago

SQL Annotate the metadata of the original message Source: https://learn.microsoft.com/en-us/azure/service-bus-messaging/topic-filters#actions

upvoted 6 times

Regex37

4 months, 3 weeks ago

Agreed. First I thought Correlation filter would be better because it can also filter on system properties and has better performance, but then I noted that you need to use SQL filter when you want to apply a filter action.

upvoted 1 times

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21c5438

4 months, 3 weeks ago

Not sure about the second one. The page says: "Each rule with an action produces a copy of the message. This message will have a property called RuleName where the value is the name of the matching rule. The action can add or update properties, or delete properties from the original message to produce a message on the subscription."

upvoted 1 times

Regex37

4 months, 3 weeks ago

I cannot spot any requirement in the question that would make actively copying the message necessary (even when copies are created by Service Bus when applying actions). So I would go with "Annotate the metadata of the original message" as well.

upvoted 1 times

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2f17d52

Most Recent 1 month, 1 week ago

SQL filters support filtering on both system and custom properties using SQL-like syntax. Filter actions (like updating message metadata or body) are only supported with SQL filters, not correlation filters. Correlation filters are simpler and faster but do not support filter actions. So SQL and Annotate the metadata

upvoted 1 times

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