Question: Under what condition is the initiation of the Synchronized Radio Link Reconfiguration Preparation procedure prohibited within a DRNS for a UE-UTRAN connection?
Option 1: If the UE has an active call in progress.
Option 2: When a Prepared Reconfiguration already exists, as defined for the UE Context.
Option 3: If the relevant UE Context lacks a signalling bearer connection.
Option 4: During handover procedures from one RNS to another.
Explanation: The correct answer is Option 2 because initiating the Synchronized Radio Link Reconfiguration Preparation procedure is not allowed if there is already a Prepared Reconfiguration in place for the UE Context, ensuring sequential management of reconfiguration processes and avoiding potential conflicts within the DRNS.