Exam DP-420 topic 3 question 1 discussion

Correct answer should be "A" - we need to resolve conflicts, hence we definitely need to read the conflicts feed, hence answers B and C are immediately eliminated as they are pull from the changes feed, answer D mentions an Azure Cosmos DB trigger, but this is only for the change feed, not for the conflicts feed, hence A is the correct answer since there is no trigger mechanism for the conflict feed in Cosmos DB

Conflict feed and CosmosDB trigger

Answer is A: https://learn.microsoft.com/en-us/azure/cosmos-db/conflict-resolution-policies#conflict-resolution-policies If you configure your container with the custom resolution option, and you fail to register a merge procedure on the container or the merge procedure throws an exception at runtime, the conflicts are written to the conflicts feed. Your application then needs to manually resolve the conflicts in the conflicts feed. To learn more, see examples of how to use the custom resolution policy and how to use the conflicts feed.

Correct answer is A

Correct answer is A

Correct answer is A: all conflicts related data is stored in the conflicts feed, you have to orchestrate the function using a timer

Answer A

As grada explained very well, the answer should be C

The Azure Cosmos DB Trigger uses the Azure Cosmos DB Change Feed to listen for inserts and updates across partitions. The change feed publishes inserts and updates, not deletions.

Answer should be A. Need to read from conflict feed but there is no trigger mechanism for the conflict feed in Cosmos DB.

The correct answer is C, only change feed triggers are available, and conflict feed needs to be manually queried from a timer-triggered function. Source: https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-cosmosdb-v2-trigger?tabs=in-process%2Cextensionv4&pivots=programming-language-csharp#attributes Nothing conflict-feed-related there, only change-feed-related. Conflict feed needs to be manually triggered like this: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/how-to-manage-conflicts?tabs=dotnetv3%2Capi-async%2Casync#read-from-conflict-feed