Question: What is the purpose of the DL-CCCH-Message class in the Radio Resource Control (RRC) protocol?
Option 1: It is used for UE-originated messages on the uplink CCCH logical channel.
Option 2: It is used for Network-originated messages on the downlink DCCH logical channel.
Option 3: It is used for Network-originated messages on the downlink CCCH logical channel.
Option 4: It is used for UE-originated messages on the uplink DCCH logical channel.
Explanation: The DL-CCCH-Message class is specifically defined as the set of RRC messages that may be sent from the Network to the UE on the downlink CCCH logical channel, making option 3 the correct answer. This highlights the importance of understanding the specific purpose and scope of different message classes in the RRC protocol.