Question: What is the primary purpose of the ConditionalReconfigurationId Information Element in E-UTRA Radio Resource Control (RRC) protocol?
Option 1: To authenticate User Equipment (UE) during initial network attachment
Option 2: To identify a conditional reconfiguration, such as Cell Handover (CHO), Carrier Aggregation (CPA), or inter-Site Carrier Coordination (CPC)
Option 3: To manage Quality of Service (QoS) parameters for bearers in a UE
Option 4: To signal the preferred radio access technology (RAT) for a UE
Explanation: The correct answer is Option 2 because ConditionalReconfigurationId is utilized to identify conditional reconfigurations, including Cell Handover, Carrier Aggregation, and inter-Site Carrier Coordination. This identification is crucial for efficient network operation and resource allocation, highlighting its importance in managing dynamic network configurations.