Question: In E-UTRA, what is the primary purpose of the SBCCH-SL-BCH-Message-V2X class in the context of V2X sidelink communication?
Option 1: To establish a dedicated radio bearer for voice calls between UEs.
Option 2: To broadcast system information from the eNodeB to all UEs in the cell.
Option 3: To facilitate the transmission of IP packets over the LTE network.
Option 4: To enable RRC message exchange between UEs for V2X sidelink communication via the SBCCH logical channel.
Explanation: The correct answer is Option 4 because the SBCCH-SL-BCH-Message-V2X class is specifically defined for sending RRC messages between UEs for V2X sidelink communication, utilizing the SL-BCH on the SBCCH logical channel for direct UE-to-UE communication, crucial for latency-sensitive V2X applications.