Question: In the context of a Subscriber Identity Module - Mobile Equipment (SIM-ME) interface, what type of information can be stored in the EFSDN (Service Dialling Numbers) file, in addition to special service numbers and supplementary service control strings?
Option 1: Only network/bearer capabilities identifiers
Option 2: Identifiers of associated network/bearer capabilities, identifiers of extension records, and associated alpha-tagging
Option 3: SIM card holder's personal details and call history
Option 4: Mobile Equipment's (ME) technical specifications and software versions
Explanation: The correct answer is Option 2 because the EFSDN file can contain identifiers for associated network/bearer capabilities, identifiers pointing to extension records, and may include alpha-tagging for easier identification, in addition to special service numbers and supplementary service control strings.