4A0-M10 Nokia 5G Packet Core Architecture Exam

Exam overview
For a list of candidate exam topics, please refer to the list of course objectives and modules in the course outline. The course overview page and course outline can be found here.

Exam Name: Nokia 5G Packet Core Architecture
Exam Number: 4A0-M10
Mandatory Prerequisites: N/A
Exam Duration: 90 minutes
Exam Appointment Duration: 135 minutes. This is the exam duration plus a 45 minute tutorial on computer-based examinations.
Number of Questions: 40 multiple-choice questions
Language: Price: $125 US
Attend the Nokia 5G Packet Core Architecture course or purchase the course materials.

Course overview
This hands-on instructor-led course explains the 5G end-to-end system architecture and describes the design and components of a 5G system which includes architecture explanations of Nokia’s solution for deployment option 3x and option 2.

It carefully examines the role and functionality of the components in the Next Generation Core (NGC). Students will also learn the procedures for access, mobility, session management, handover, and interworking with EPS, together with the concepts relevant to network slicing, the flow-based architecture of QoS, and 5G security.

The course is accompanied by comprehensive hands-on lab exercises using Nokia Cloud Mobility Manager (CMM), Cloud Mobile Gateway (CMG), and Network Resource Discovery (NRD) to reinforce the course learning objectives.

Course objectives
After completing the course, students should be able to:

Identify the drivers, benefits, use-cases, and performance requirements of 5G Present 5G end-to-end system architecture and deployment options
Identify key characteristics and components of 5G New Radio (NR)
Explain the building blocks of Nokia end-to-end 5G solution for option 3X
Describe the centric technical capabilities relevant for option 3X (DC, DECOR, CUPS)
Explain architectural changes and configuration steps for CMG CUPS (Control and User Plane Separation)
Detail EPC procedures for option 3X Present next-generation core (NGC) architecture
Explain NGC network functions (NFs)
Identify NGC logical interfaces
Describe the 5G service-based architecture (SBA)
Describe 5G mobility management functions
Describe 5G session management functions
Describe handovers in 5GS
Describe the architecture for interworking between
5GS and EPS using the N26 interface
Present 5G network architecture for end-to-end network slicing
Describe network slice identification and selection process
Detail UE registration and PDU session establishment procedures in NGC
Describe the procedures for changing the anchor points of SSC mode 2 and mode 3 PDU sessions
Detail the Xn-based and N2-based handover procedures
Describe the actions performed during the interworking procedures between EPS and 5GS when
N26 interface is used
Present 5G QoS architecture
Describe 5G security architecture and mechanisms
Explain the characteristics and capabilities of the Nokia solution for 5G packet core
Configure Nokia CMM and CMG to enable AMF, SMF, and UPF network functions and allow successful 5G UE registration and PDU session establishment procedures
Verify NF registrations and display NF profiles in the
Nokia NRD

Course modules
Module 1 – Introduction to 5G
Drivers, benefits, and performance requirements of 5G
Differences between the 4G and 5G network architectures
5G deployment options
5G cloud RAN architecture and NR characteristics
Key characteristics of NGC
Module 2 – EPC Enhancements for 5G Option 3X
Building blocks of Nokia end-to-end solution for option 3X
Enhancements required for supporting option 3X
CMG CUPS architecture
CMG-U and CMG-C configuration steps for CMG CUPS deployment
Procedures for supporting option 3X
Module 3 – Next Generation Core
NGC architecture
NGC NFs (network functions) and logical interfaces
Services offered by the network repository function (NRF)
Control plane interaction between NFs in SBA
Module 4 – NGC Mobility and Session Management Functions
5G NAS (non-access stratum) protocol overview
5G mobility management sublayer
Registration and connection management states in NGC
Registration, connection, and mobility management functions of NGC
Session management concepts and functionality in NGC
Principles of session and service continuity (SSC) modes used in 5GS
AMF basic configuration on Nokia CMM
SMF and UPF basic configuration on Nokia CMG
Xn-based NG-RAN handover
N2-based NG-RAN handover
Interworking between 5GS and EPS using the N26 interface

Module 5 – Network Slicing
Motivations and benefits for 5G network slicing
5G network architecture for end-to-end network slicing
Network slice assistance information in 5G
Network slice identification and selection
Services offered by the network slice selection function (NSSF)
UE registration to a set of network slices
PDU session establishment in a network slice
Module 6 – NGC Procedures
UE initial registration procedure
PDU session establishment procedure
Procedures for changing the anchor point of SSC mode 2 and SSC mode 3 PDU sessions
Access node release procedure
Service request procedure
Xn-based inter NG-RAN handover procedures
N2-based inter NG-RAN handover procedure
5GS to EPS handover procedure using N26
EPS to 5GS handover procedure using N26
5GS to EPS idle mode mobility procedure using N26
EPS to 5GS idle mode mobility procedure using N26
Module 7 – 5G QoS
5G flow-based QoS framework
QoS profiles used by NG-RAN to map between QoS flows and data radio bearers (DRBs)
SDF templates used by UPF to map user traffic to QoS flows
QoS rules used by UE to map user traffic to QoS flows and DRBs
Treatment of QoS flows on the downlink and uplink
Module 8 – 5G Security
5G security architecture and concepts
5G security enhancements in subscription identifier privacy
5G access-agnostic authentication framework
Increased home control 5G security feature
5G security mechanisms for service-based interfaces

QUESTION 1
Which of the following best describes the function of a PDU session flow classifier?

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

Correct Answer: A

QUESTION 2
Which of the following statements regarding cloud RAN architecture is FALSE?

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.

Correct Answer: D

QUESTION 3
A UE has a PDU session established using slice 1. The operator removes slice 1 from the UE subscription data stored in UDM. Which of the following actions is NOT performed as a result?

A. UDM notifies the serving AMF about the UE subscription data modification.
B. AMF initiates the UE configuration update procedure.
C. AMF requests the UE to release the established PDU session.
D. UE updates its slicing information with the data received from AMF.

Correct Answer: B

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