A.The gNB is split into three functional modules: a radio unit (RU), a distributed unit (DU), and a centralized unit (CU).

B.DU performs the non-real time processing of layer 2.

C.The fronthaul segment connects RU to DU and the midhaul segment connects DU to CU.

D.CU can be deployed in the cloud as a VNF.

A.The UE listens and responds to paging.

B.The UE performs registration updates.

C.Power and signaling efficiency is optimized for the UE.

D.The UE connects to the network to send uplink data.

A.Application programming interfaces (APIs) are used to invoke services.

B.The service-based architecture enables flexible addition of new network functions and services.

C.Service-based interfaces are point-to-point.

D.Service producers are not aware of service consumers.

A.When NR radio quality becomes sub-optimal, gNB decides to split the bearer.

B.Dual connectivity is used for high throughput services such as eMBB.

C.Both eNB and gNB are connected with S1-U interfaces to SGW.

D.VoLTE traffic is handled by the LTE network.

A.Each QoS profile includes a 5G QoS Identifier (5QI) and an Allocation and Retention Priority (ARP).

B.NG-RAN sends the QoS profiles and corresponding QoS Flow IDs to the UE.

C.SMF derives the QoS profile of a QoS Flow from a PCC rule and sends it to NG-RAN.

D.NG-RAN uses the QoS profiles to create mapping between QoS Flow IDs and data radio bearers.