You successfully run an HTTP request to:.

Comprehensive and Detailed 150 to 250 words of Explanation From Azure AI Apps and Agents Developer/Course Guide/topics:

The request invokes the Azure Cognitive Services/Azure AI resource regenerateKey management operation and explicitly specifies " keyName " : " Key2 " .

Azure AI service resources traditionally expose two interchangeable access keys: Key1 and Key2. Key1 is treated as the primary key and Key2 as the secondary key. Regenerating Key2 invalidates the previous Key2 value and produces a new value for that secondary credential.

Only the selected key is regenerated. Key1 remains unchanged, so option D is incorrect.

The request is unrelated to Azure AI Search query keys, which are separate read-only Search credentials. It also does not cause the newly generated key to be written automatically to Azure Key Vault. Such storage would require separate Key Vault configuration or deployment automation.

Maintaining two resource keys enables zero- or low-downtime key rotation: applications can temporarily use one key while the other is regenerated, then switch and rotate the remaining key.

The AI-103 Study Guide includes securing and managing Azure AI systems, including credentials, authentication, least privilege, and operational resource management. Microsoft Learn

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