Question: How does the UE and AMF handle registration states in a 5G system?
Option 1: Using a single state machine for both 3GPP and non-3GPP accesses.
Option 2: Using separate state machines for 3GPP access and non-3GPP access, with UDM managing independent UE Registration procedures for each access type.
Option 3: By associating registration states per access type with the UE using a single state machine.
Option 4: By not distinguishing between 3GPP and non-3GPP accesses in terms of registration states.
Explanation: The correct answer is Option 2 because, according to the text, one state machine handles registration states over 3GPP access and a second state machine handles registration states over non-3GPP access. Additionally, UDM manages separate UE Registration procedures for each access type, and the AMF associates registration states per access type with the UE.