Question: What is the primary purpose of the DLInformationTransfer message in the RRC protocol?
Option 1: To establish a new SRB2 connection
Option 2: To transfer NAS dedicated information, timing information for the 5G internal system clock, or IAB-DU specific F1-C related information
Option 3: To suspend or resume an existing SRB2 connection
Option 4: To send non-critical extension information to the UE
Explanation: The DLInformationTransfer message is used for the downlink transfer of NAS dedicated information, timing information for the 5G internal system clock, or IAB-DU specific F1-C related information. This is stated in the provided text and highlights the primary purpose of this message in the RRC protocol.