You have an Azure key vault named KV1 that uses role-based access control (RBAC) authorization...

A managed identity lets App1 authenticate to Key Vault through Microsoft Entra ID without storing credentials in application settings. Because KV1 uses RBAC, the identity can then be granted an appropriate Key Vault data-plane role. An access policy is not used for RBAC-mode authorization. A private endpoint changes network reachability, and an app registration would still require credential management unless paired with a secret or certificate. The exam objective emphasizes practical identity enforcement rather than cosmetic configuration. A valid answer must identify who authenticates, what permission is granted, where the scope is applied, and whether the method continues to work without passwords or secrets. That is why the selected answer is preferred over broader administrative roles or unrelated access settings. The result is a direct exam-style implementation choice: it changes the required security behavior without relying on unrelated monitoring, manual cleanup, or excessive privilege. Official Microsoft source/topic: SC-500 Study Guide > managed identities and Key Vault; Microsoft Learn > managed identities for App Service with Key Vault.

==============================================================