Question: Under what condition is the initiation of an Unsynchronised Radio Link Reconfiguration procedure prohibited within a DRNS for a UE-UTRAN connection?
Option 1: When the UE is in idle mode.
Option 2: If the new radio link configuration requires synchronization across all cells.
Option 3: If a Prepared Reconfiguration already exists for the UE Context.
Option 4: When the signalling bearer connection for the UE Context is unavailable.
Explanation: The Unsynchronised Radio Link Reconfiguration procedure shall not be initiated if a Prepared Reconfiguration exists, preventing conflicting reconfiguration processes for the same UE Context within the DRNS and maintaining network integrity in managing UE connections.