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Nokia 4A0-M10 Exam
Nokia 5G Packet Core Architecture (Page 4 )

Updated On: 1-Feb-2026
Page 2 of 9
PDF with 40 Questions

Which of the following best describes the function of a PDU session flow classifier?

  1. An SMF that dynamically inserts and removes uplink classifiers (UL CL) at the UPFs.
  2. An SMF that dynamically inserts and removes UL CL at the UE.
  3. A UPF that terminates the N6 interface towards the data network.
  4. A UPF that filters uplink traffic according to UL CL rules provided by the SMF.

Answer(s): A


Reference:

https://www.metaswitch.com/knowledge-center/reference/what-is-the-5g-user-plane-function-upf



Which of the following best describes the Secondary Node Addition procedure?

  1. Used to transfer bearer contexts from the master eNB to the secondary gNB.
  2. Used to establish a UE context at the gNB for a UE that supports option 3X.
  3. Used to establish connectivity from the gNB to the EP
  4. Used to establish an X2 connection between the eNB and gNB.

Answer(s): D



Which of the following actions is performed when an idle UE moves from 5GS to EPS and the N26 interface is used?

  1. UE initiates an Attach procedure and includes an EPS-GUTI derived from its 5G-GUTI.
  2. For any PDU session that supports interworking, the serving SMF provides an SM context that includes mapped EPS bearers to the AMF.
  3. AMF selects an SGW to serve the UE, and then sets up the required S5-U and S5-C GTP tunnels on the selected SGW.
  4. AMF uses the EPS-GUTI derived from the UE 5G-GUTI to discover the MME, and then provides the UE context to the MME.

Answer(s): C



An AMF needs to know when an SMF deregisters with the NRF. Which of the following NRF APIs should the AMF use?

  1. Nnrf_NFManagement_NFUpdate Request
  2. Nnrf_NFDiscovery_NFDiscover Request
  3. Nnrf_NFManagement_NFStatusSubscribe Request
  4. Nnrf_NFManagement_NFDeregister Request

Answer(s): A


Reference:

https://www.etsi.org/deliver/etsi_ts/123500_123599/123502/15.03.00_60/ts_123502v150300p.pdf



The exhibit below displays a packet capture of the PFCP Session Modification Request message sent during a PDU Session Establishments procedure. What do the highlighted TEID and IP Address refer to?

  1. The N3 TEID allocated by gNB and the gNB IP address.
  2. The N3 TEID allocated by UPF and the UPF IP address.
  3. The N3 TEID allocated by SMF and the SMF IP address.
  4. The N3 TEID allocated by SMF and the UPF IP address.

Answer(s): D



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