Question: In a USIM's EFNAFKCA file, how are the NAF Key Centre addresses prioritized when multiple records are present?
Option 1: Alphabetical order based on the Fully Qualified Domain Name (FQDN)
Option 2: The first record has the highest priority, and the last record has the lowest priority
Option 3: Based on the geographical location of the NAF Key Centre
Option 4: Randomly assigned by the USIM during initialization
Explanation: This is correct because within the EFNAFKCA file, which contains one or more NAF Key Centre addresses, the prioritization is explicitly defined by the order of the records. The first record is always considered to be of the highest priority, and conversely, the last record is considered to be of the lowest priority.