Question: What is the primary function of the NCR-Fwd in a Network-Controlled Repeater node?
Option 1: To communicate with the gNB to receive side control information via a control link.
Option 2: To establish SRBs and DRB(s) with a gNB for OAM traffic transport.
Option 3: To perform amplifying-and-forwarding of signals between gNB and UE via a single beam.
Option 4: To perform amplifying-and-forwarding of signals between gNB and UE via multiple beams, controlled by side control information from the gNB.
Explanation: The NCR-Fwd is responsible for amplifying-and-forwarding signals between the gNB and UE. According to the text, it can support multiple beams towards the UE and its behavior is controlled by the side control information received from the gNB. This indicates that the primary function of the NCR-Fwd is to perform amplifying-and-forwarding of signals via multiple beams, as stated in Option 4.