Question: For the EFSPN (Service Provider Name) file, which of the following coding schemes are permissible for the service provider string, according to 3GPP specifications?
Option 1: SMS default 7-bit coded alphabet with bit 8 set to 0, or one of the UCS2 code options.
Option 2: Only UTF-8 encoding for uniformity across all ME displays.
Option 3: Either GSM character set as defined in mobile communication standards or ISO/IEC 8859-1.
Option 4: Exclusive use of hexadecimal coding for service provider names.
Explanation: The correct answer, Option 1, aligns with the specified requirements for EFSPN, allowing for either the SMS default 7-bit coded alphabet (with bit 8 set to 0) or one of the UCS2 code options. This flexibility accommodates various display requirements on different Mobile Equipment (ME). The other options are incorrect as they introduce coding schemes not mentioned in the context of EFSPN.