Question: Which of the following statements accurately describes the scope of the 'GTP.OutSigOctGnGGSN' measurement on the Gn interface from SGSN to GGSN?
Option 1: It exclusively measures octets of outgoing GTP signalling packets for GTPv1.
Option 2: It provides a combined total of octets for all outgoing GTP signalling packets, regardless of the GTP version used.
Option 3: It separately measures incoming and outgoing GTP signalling packets on the Gn interface.
Option 4: It is limited to measuring only non-signalling GTP packets between SGSN and GGSN.
Explanation: The correct answer reflects that 'GTP.OutSigOctGnGGSN' measures the total number of octets for outgoing GTP signalling packets on the Gn interface from SGSN to GGSN, encompassing all GTP versions, allowing for comprehensive monitoring of signalling traffic across different protocol versions.