Question: In UTRAN, what triggers the measurement of 'Failed relocation preparation for outgoing inter-RNC hard handovers switching in the CN' per cause?
Option 1: Receipt of a RANAP message RELOCATION PREPARATION FAILURE from the CN to the source RNC
Option 2: Successful completion of an inter-RNC hard handover in the UTRAN Cell FDD
Option 3: Detection of high packet loss in UtranCell TDD HcR (High Capacity Radio)
Option 4: Handover initiation from a UtranCell TDD Lcr (Low Capacity Radio) to a UtranCell FDD
Explanation: The correct answer is Option 1 because the measurement of failed relocation preparation for outgoing inter-RNC hard handovers switching in the CN is triggered by the receipt of a RANAP message, namely RELOCATION PREPARATION FAILURE, sent from the Core Network to the source Radio Network Controller, indicating a failed relocation preparation for an outgoing inter-RNC hard handover.