ETCP Core Network Architecture

Question 1

In Ericsson's 5G core (5GC), what function handles session management for user data bearers?

Accepted Answer

SMF

Answer

AMF

Answer

UPF

Answer

NRF

Question 2

Which 5G core network function is responsible for authenticating subscribers and managing mobility?

Accepted Answer

AMF

Answer

PCF

Answer

UDM

Answer

AUSF

Question 3

In Ericsson's EPC (4G core), what does the PGW do?

Accepted Answer

Acts as the gateway between the LTE core and external data networks (internet)

Answer

Manages mobility and authentication

Answer

Provides radio resource management

Answer

Routes voice calls in IMS

Question 4

What is the role of the NRF (Network Repository Function) in Ericsson's 5G core?

Accepted Answer

Maintaining a registry of available NFs and enabling service discovery

Answer

Routing SMS messages to subscribers

Answer

Managing RAN handover procedures

Answer

Storing subscriber policy profiles

Question 5

In Ericsson's IMS (IP Multimedia Subsystem), what is the function of the P-CSCF?

Accepted Answer

Provides the first SIP contact point for UEs registering to IMS

Answer

Stores subscriber profiles and authentication data

Answer

Translates between SIP and legacy PSTN protocols

Answer

Manages media gateway resources

Question 6

What interface connects the eNB (4G base station) to the EPC's MME in Ericsson LTE deployments?

Accepted Answer

S1-MME

Answer

X2

Answer

Uu

Answer

S11