Nokia Certified Associate – Bell Labs Learning Academy — Question 7

What is Unified Data Management (UDM)?

Answer options

• A. This network function stores or retrieves subscriptions, profiles and authentication data to or from the data repositories. It offers services to the AMF, SMF, NEF and AUSF using the Service Based Interface.
• B. This network function supports authentication for 3GPP and non-3GPP accesses.
• C. This network function is part of data repositories in the Common Data Layer and in opposition to the UDR, it stores non-standardized unstructured data.
• D. This network function provides registration and discovery functionality to enable other network functions/services to discover and communicate with each other.

Correct answer: B

Explanation

The correct answer is B, as Unified Data Management (UDM) specifically supports authentication for both 3GPP and non-3GPP accesses. Option A describes the functions of another network function, while option C talks about data storage characteristics that are not specific to UDM, and option D relates to registration and discovery, which is not the primary role of UDM.