Question: In a Phone Book entry, if additional records are stored in different Elementary Files (EFs) beyond the main ADN file record, what is required to associate these disparate records?
Option 1: A predefined naming convention for all EF records
Option 2: A mechanism to link all records of the same Phone Book entry
Option 3: Mandatory support from both ME (Mobile Equipment) and UICC (Universal Integrated Circuit Card)
Option 4: Storage of all records in a single EF for simplicity
Explanation: This is correct because, according to the Phone Book specifications, when a Phone Book entry's information is spread across multiple EFs (beyond the primary ADN file record), a defined mechanism must be in place to link all these records together, ensuring they are recognized as part of the same entry. This facilitates proper management and retrieval of the entry's complete information.