4A0-M10 Nokia 5G Packet Core Architecture Questions and Answers

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

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

Used to establish connectivity from the gNB to the EPC.

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

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

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

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

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

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

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

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

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