Microsoft Azure Developer Associate AZ-204 Practice Question
You are building a background service that synchronizes Azure AD user accounts with an on-premises HR system. To reduce network usage, the service must retrieve only the users that were added, modified, or deleted since the last synchronization run. Which Microsoft Graph mechanism should you implement?
Add a $select query parameter to the /users endpoint to limit the returned properties.
Send a /users request that includes a $filter clause on the updatedDateTime property.
Use the /users/delta query and store the returned deltaLink for subsequent incremental synchronizations.
Create a Microsoft Graph change notifications (webhook) subscription for the user resource type.
Microsoft Graph delta queries track incremental changes to a collection. Calling the /users/delta endpoint returns the current changes and a deltaLink. Storing the deltaLink and using it on subsequent calls causes Microsoft Graph to return only the users that were added, updated, or deleted since the previous call, minimizing data transfer.
A $filter on an updatedDateTime property does not include deletions and can miss updates when clocks differ. Change notifications (webhooks) push events in near real time but do not let you pull the full state for late or missed events. The $select parameter limits returned properties but still returns the entire collection, so it does not reduce the number of objects transferred.
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Microsoft Azure Developer Associate AZ-204
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