Question: Which entity provides the N5g-eir_EquipmentIdentityCheck service to check if a PEI is in the prohibited list?
Option 1: UE: User Equipment
Option 2: gNB: Next Generation Node B
Option 3: SMF: Session Management Function
Option 4: 5G-EIR: 5G Equipment Identity Register
Explanation: The 5G-EIR provides the N5g-eir_EquipmentIdentityCheck service to verify if a PEI is in the prohibited list, ensuring that only authorized equipment can access the network.