Question: Which of the following identifiers would NOT be represented by the abstract object class for an end user identifier in a telecom network?
Option 1: IMSI (International Mobile Subscriber Identity)
Option 2: MSISDN (Mobile Station International Subscriber Directory Number)
Option 3: IMPI (IP Multimedia Private Identity)
Option 4: IMEI (International Mobile Equipment Identity)
Explanation: According to the definition, the abstract object class represents an end user identifier used within the network for various functionalities. It specifically excludes identities not associated with a user, such as an IMEI, which is associated with the device itself, not the user. In contrast, IMSI, MSISDN, and IMPI are all identifiers linked to the user's subscription or profile.