A.An SMF that dynamically inserts and removes uplink classifiers (UL CL) at the UPFs.

B.A UPF that terminates the N6 interface towards the data network.

C.An SMF that dynamically inserts and removes UL CL at the UE.

D.A UPF that filters uplink traffic according to UL CL rules provided by the SMF.

A.Used to establish connectivity from the gNB to the EPC.

B.Used to establish a UE context at the gNB for a UE that supports option 3X.

C.Used to transfer bearer contexts from the master eNB to the secondary gNB.

D.Used to establish an X2 connection between the eNB and gNB.

A.The SMF decides whether a direct or indirect downlink data forwarding path is to be used.

B.Handover signaling messages are exchanged between source and target NG-RAN nodes through AMF.

C.The serving SMF determines if the UPF terminating N3 can continue to serve the UE and selects a target I-UPF when required.

D.The serving AMF determines if it can continue to serve the UE and select a target AMF when required.

A.Source AMF obtains session management contexts stored in UDM+HSS for each PDU session that supports interworking.

B.Source AMF sends a Forward Relocation Request message to the target MME and provides session management contexts.

C.Source gNB sends an NGAP Handover Required message to source AMF with handover type set to
"NRtoLTE".

D.Indirect downlink data forwarding paths are established from source gNB to target eNodeB.

A.PGW selection of appropriate PCRF that supports 5G policies.

B.Support for higher data rates for EPC interfaces.

C.MME selection of appropriate gateways capable of supporting NR.

D.Controlled UE access to NR based upon subscription information.