Question: What happens when the size of an encoded RRC message PDU exceeds the maximum PDCP SDU size?
Option 1: The RRC message is discarded and a new one is generated.
Option 2: Segmentation is performed in the RRC layer to carry each segment in a separate RRC PDU.
Option 3: The RRC message is transmitted as is, without any modifications.
Option 4: The maximum PDCP SDU size is increased to accommodate the large RRC message.
Explanation: When an encoded RRC message exceeds the maximum allowed size for a PDCP SDU (Protocol Data Unit), it needs to be segmented into smaller parts. This segmentation process occurs within the RRC layer, where each segment of the original message is carried in its own separate RRC PDU. The receiving end then reassembles these segments back into the complete RRC message.