ETCP Core Network Architecture 2

Question 1

In Ericsson's 5GC, which network function enforces policy rules and manages QoS for PDU sessions?

Accepted Answer

PCF

Answer

SMF

Answer

NEF

Answer

NSSF

Question 2

What does Network Slicing allow operators to do in Ericsson's 5G core?

Accepted Answer

Create multiple logical networks on shared infrastructure, each with tailored SLAs

Answer

Physically separate antenna sectors

Answer

Allocate dedicated spectrum per user

Answer

Split base station software into microservices

Question 3

In Ericsson's cloud-native 5G core, what does the SBI (Service-Based Interface) use as its communication protocol?

Accepted Answer

HTTP/2 with JSON (RESTful)

Answer

Diameter

Answer

SOAP/XML

Answer

SS7

Question 4

What is the purpose of the UDR (Unified Data Repository) in Ericsson's 5G core?

Accepted Answer

Stores raw subscriber data that can be accessed by UDM, PCF, and other NFs

Answer

Manages physical data center resources

Answer

Provides DNS resolution for NF discovery

Answer

Handles inter-PLMN roaming agreements

Question 5

In Ericsson EPC, what does the HSS store?

Accepted Answer

Subscriber identity, authentication keys, and service profiles

Answer

Real-time call detail records

Answer

Network topology and routing tables

Answer

Cell-level radio measurements

Question 6

Which Ericsson core solution supports Voice over LTE (VoLTE) by providing IMS anchoring?

Accepted Answer

Evolved Packet Core (EPC) with IMS

Answer

NodeB RNC pair

Answer

SGSN/GGSN stack

Answer

SDN Controller only