Question: In the EFOPL (Operator PLMN List) for a SIM-ME interface, how are multiple Location Area Codes (LACs) specified for a given Public Land Mobile Network (PLMN)?
Option 1: By storing a single LAC value in bytes 4 to 5 and setting bytes 6 to 7 to 'FFFF' for all PLMNs.
Option 2: By setting both LAC values (bytes 4-5 and bytes 6-7) to '0000' to indicate the entire range, with no provision for specifying multiple discrete LACs.
Option 3: Through a separate EF dedicated solely to listing all possible LACs for each PLMN, referenced by the EFOPL.
Option 4: By storing the start of the LAC range in bytes 4 to 5 and the end of the LAC range in bytes 6 to 7 for the given PLMN.
Explanation: To specify a range of LAC values for a given PLMN in the EFOPL, the start of the range is stored in bytes 4 to 5, and the end of the range is stored in bytes 6 to 7. This allows for defining either a single LAC or a range of LACs for each PLMN, facilitating network configuration and user equipment (UE) initialization.