Question: In mobile terminated location requests for a target UE in the PS domain, which two identifiers are used to identify the target UE?
Option 1: MSISDN and IP Address (IPv4 or IPv6)
Option 2: MSISDN and IMSI
Option 3: SIP-URI and IP Address (IPv4 or IPv6)
Option 4: IMSI and SIP-URI
Explanation: According to standard practices for mobile terminated location requests, the target UE is identified using either its MSISDN (Mobile Subscriber Integrated Services Digital Network Number), essentially the phone number, or its IMSI (International Mobile Subscriber Identity), a unique identifier for each SIM card, ensuring accurate targeting for location services.