Question: What is the correct composition and encoding requirement for a Home Agent - Access Point Name (HA-APN) in a PLMN, according to 3GPP standards?
Option 1: Composed of HA-APN Operator Identifier only, encoded as defined in IETF RFC 2181, with a maximum length of 50 octets.
Option 2: Composed of both HA-APN Network Identifier and HA-APN Operator Identifier, encoded following Name Syntax from IETF RFCs (2181, 1035, 1123), with a maximum length of 100 octets.
Option 3: Composed of HA-APN Network Identifier only, using custom encoding, with no specified maximum length.
Option 4: Exclusively defined by the PLMN's internal policies, without adherence to specific IETF RFCs for encoding.
Explanation: The correct answer accurately reflects the HA-APN's dual-part composition (Network Identifier and Operator Identifier) and its encoding requirements as per specified IETF RFCs, ensuring interoperability and standardized identification within a PLMN.