Which aspect of user permissions is preserved during the Secure Data Retrieval process?

Field-level security is preserved during the Secure Data Retrieval process because it determines which specific fields a user can view or edit based on their permissions. This aspect of security ensures that even while data is being retrieved securely, users can only access fields that their profile or role allows them to access. Field-level security is critical for protecting sensitive information, as it ensures necessary data access restrictions remain in place regardless of the retrieval method.

The other aspects mentioned do not directly pertain to individual user permissions in the same way. Data encryption methods focus on securing data during transmission and storage rather than defining user access levels. Network access controls pertain to the broader system-level security that governs who can connect to the server or network but do not dictate what data users can access once connected. End-user training sessions relate to educating users about security practices and system usage, but they do not define what permissions are enforced during data retrieval.