Which of the following statements about the protection of service-based interfaces (SBIs) is FALSE?
A. The transport layer security (TLS) performs certification-based authentication, providing connection security between network functions within a PLMN.
B. The OAuth 2.0 framework is used to secure the communication between network functions within a PLMN at the network layer.
C. The network domain security/Internet protocol (NDS/IP) provides confidentiality and data integrity between network functions within a PLMN.
D. The security edge protection proxy (SEPP) handles the security of inter-domain SBIs and protects the interaction between network functions in different PLMNs.
Which 5GS network function allows UE connectivity to 5GC through non-3GPP access networks?
A. SEPP
B. N3IWF
C. NWDAF
D. NEF
Which Nokia product is used for the AMF in 5GS?
A. Cloud Mobility Manager
B. Cloud Mobile Gateway
C. Network Resource Discovery
D. Smart Plan Suite
Which of the following is NOT an advantage of the 5GS service-based architecture?
A. Application programming interfaces (APIs) are used to invoke services.
B. Service-based interfaces are point-to-point.
C. The service-based architecture enables flexible addition of new network functions and services.
D. Service producers are not aware of service consumers.
Which of the following is an HTTP method used by an NF service consumer to create a new resource at an NF service producer when the resource URI is selected by the consumer?
A. POST
B. PUT
C. PATCH
D. UPDATE
Which of the following statements about non-access stratum mobility management (NAS-MM) protocol is TRUE?
A. It runs between the UE and the SMF.
B. It is used to control user plane resources between the UE and a data network.
C. It provides common procedures such as authentication, identification, and UE configuration update.
D. NAS-MM messages are relayed transparently by the AMF.
Which of the following statements about 5GS PDU sessions is FALSE?
A. A PDU session allows for the exchange of PDUs between UE and a data network.
B. A PDU session contains one single dedicated radio bearer and one or more N3 GTP-U tunnels.
C. A PDU session has one default QoS flow and can have multiple non-default QoS flows.
D. A PDU session has one or more UPFs acting as PDU session anchors.
Which of the following actions is NOT performed when handling an uplink data packet?
A. UE maps the uplink data packet to a QoS Flow based on QoS rules received from SMF.
B. UE maps the QoS Flow identifier to a data radio bearer based on QFI-to-DRB mapping received from NG-RAN.
C. NG-RAN marks the data packet with the proper DSCP value.
D. NG-RAN removes the QoS Flow identifier from the packet header and forwards the packet over the proper N3 GTP-U tunnel.
Which of the following is NOT an EDCE5 core enhancement to support Option 3X?
A. Support for higher data rates for EPC interfaces.
B. MME selection of appropriate gateways capable of supporting NR.
C. PGW selection of appropriate PCRF that supports 5G policies.
D. Controlled UE access to NR based upon subscription information.
Which of the following statements about the downlink user plane data flow in Option 3X is FALSE?
A. Data packets of bearers that do not use dual connectivity are sent from EPC to UE through eNB.
B. When NR coverage is good, data packets of bearers that use dual connectivity are sent from EPC to UE using secondary cell group bearers.
C. When NR coverage degrades, the gNB decides when to use split bearers and send some of the packets received from the core through eNB.
D. When NR coverage is poor, data packets of bearers that use dual connectivity are sent to the UE through eNB.
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