Question: In a 5GS Tracking Area Identity (TAI) FQDN, if the Mobile Network Code (MNC) has only 2 significant digits, how is it encoded in the FQDN?
Option 1: The 2 digits are appended directly without any padding.
Option 2: A "0" digit is inserted at the right side to fill the 3 digits coding of MNC.
Option 3: The MNC is truncated to a single digit for uniqueness in the FQDN.
Option 4: One "0" digit is inserted at the left side to fill the 3 digits coding of MNC.
Explanation: According to the specification for constructing the 5GS TAI FQDN, if there are only 2 significant digits in the MNC, one "0" digit shall be inserted at the left side (padding) to ensure the MNC is always represented by 3 digits in the FQDN, maintaining consistency and completeness in the identifier’s structure.