Question: In a USIM's EFOPLMNWLAN file, how are operator-preferred PLMNs for WLAN access ordered?
Option 1: Alphabetically by Mobile Country Code (MCC) and then Mobile Network Code (MNC)
Option 2: By the age of the network infrastructure in each PLMN
Option 3: Randomly to ensure fair distribution across all listed PLMNs
Option 4: In priority order, with the first entry being the highest priority and the nth entry being the lowest
Explanation: Operator-preferred PLMNs are listed in a specific order of priority to guide User Equipment (UE) in selecting the most preferred PLMN for WLAN access when multiple options are available, optimizing connectivity based on the operator's preferences.