Question: What type of services does the NSSAAF provide to support primary authentication in SNPN with Credentials holder using an AAA server?
Option 1: Network Function (NF) services for User Equipment (UE) authentication
Option 2: NF services for Application Function (AF) authorization
Option 3: NF services for Credentials Holder (CH) using Authentication, Authorization, and Accounting (AAA) for primary authentication
Option 4: NF services for Policy Control Function (PCF) policy management
Explanation: The NSSAAF provides security-related services to support primary authentication in SNPN with Credentials holder using an AAA server. This includes NF services specifically designed for CH using AAA, which is essential for authenticating and authorizing users in the 5G system.