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Question 1 of 25

1. Question
which entity from IMS does not exist :
- I-CSCF
- S-CSCF
- P-CSCF
- T-CSCF
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Question 2 of 25

2. Question
Which voice solution is not a target solution to be commercialy deployed in most of
networks :
- VoNR
- EPS Fallback
- RAT Fallback
- VoLTE
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Question 3 of 25

3. Question
Which one is NOT an IMSI Private user identity :
- ISIM
- IMC
- UMC
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Question 4 of 25

4. Question
Can we have several IMS Public user entities :
- Yes
- No
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Question 5 of 25

5. Question
IP Multimedia Public identiy is called :
- IMPI
- IMPU
- IMP
- IMPS
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Question 6 of 25

6. Question
Can IMS signaling and voice services with QCI as 1 be separately transmitted in NSA
networking?
- No, they must be transmitted together.
- Yes, they can be separately transmitted.
- Only in SA networking.
- It depends on the network configuration.
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Question 7 of 25

7. Question
Can NR voice services be redirected to the LTE network?
- No, NR voice services must remain on the 5G NR network.
- Yes, they can be redirected to the 3G network.
- Yes, they can be redirected to the LTE network via EPS fallback.
- Only during a handover.
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Question 8 of 25

8. Question
What are the similarities and differences between EPS fallback and CSFB?
- Both are fallback mechanisms, but EPS fallback is for 5G to 4G, while CSFB is for 4G to 2G/3G.
- Both involve 5G to 4G fallback.
- EPS fallback is for voice, while CSFB is for data.
- There are no similarities between them.
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Question 9 of 25

9. Question
What are the similarities and differences between VoNR and VoLTE?
- Both use different core networks.
- VoNR is for 3G networks, and VoLTE is for 4G networks.
- Both use IMS for voice services, but VoNR operates over 5G NR, and VoLTE operates over LTE.
- There are no differences between them.
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Question 10 of 25

10. Question
During an EPS fallback, which network does the UE fall back to for voice services?
- 3G network
- 2G network
- 4G LTE network
- 5G NR network
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Question 11 of 25

11. Question
What does the term "VoNR" stand for?
- Voice over New Radio
- Voice over Non-Radio
- Voice over Network Radio
- Voice over NR Release
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Question 12 of 25

12. Question
What does the 5QI (5G Quality Indicator) in VoNR specify?
- The UE's mobility state
- The quality of service for voice traffic
- The encryption level used for calls
- The registration status of the UE
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Question 13 of 25

13. Question
What is the main purpose of EPS fallback in 5G networks?
- To maintain voice services by falling back to LTE when 5G NR cannot handle voice calls.
- To ensure seamless video streaming during network transitions.
- To switch data sessions from 4G LTE to 5G NR.
- To perform authentication during the registration process.
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Question 14 of 25

14. Question
What is the primary role of the P-CSCF in the IMS network during a VoNR call?
- To handle media flow between the UE and the core network.
- To serve as the first contact point for the UE and manage SIP signaling.
- To manage mobility and session continuity during handovers.
- To authenticate the UE and assign the S-CSCF.
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Question 15 of 25

15. Question
What role does the S-CSCF play in the IMS architecture?
- It is the first contact point for the UE in the IMS network.
- It provides S-CSCF selection for the UE during registration.
- It is responsible for session control, including registration and authentication.
- It stores subscription data and performs UE authentication.
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Question 16 of 25

16. Question
Which of the following is a key parameter that must be configured on the gNodeB for
EPS fallback?
- Voice Strategy Switch
- Handover Mode Switch
- EPS FB Mode
- All of the above
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Question 17 of 25

17. Question
What does AMF stand for in the context of 5G networks?
- Access Mobility Function
- Authentication and Mobility Function
- Access and Mobility Management Function
- Application Mobility Function
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Question 18 of 25

18. Question
What is the IMS-based VoLTE solution’s primary function?
- To perform voice services over the NR network
- To handle voice calls in the 3G network
- To carry voice services over the LTE network using IMS
- To perform CS fallback in the 4G network
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Question 19 of 25

19. Question
What is the key identifier used by a UE in the IMS network for registration?
- IMPI (IP Multimedia Private Identity)
- IMPU (IP Multimedia Public Identity)
- IMSI (International Mobile Subscriber Identity)
- IMEI (International Mobile Equipment Identity)
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Question 20 of 25

20. Question
Which protocol is primarily used for signaling in the VoNR architecture?
- H.323
- Diameter
- SIP
- RTP
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Question 21 of 25

21. Question
Is Diameter protocol being used in 5G Network ?
- Yes
- No
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Question 22 of 25

22. Question
Which one is a SIP Method :
- Invite
- Notify
- Subscribe
- All of them
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Question 23 of 25

23. Question
What is the default voice codec used in voice over 5G :
- AMR-WB
- EVS
- EFR
- FR
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Question 24 of 25

24. Question
Which one is the average MOS value if using EVS Codec in VoNR call ?
- 4.1
- 4.6
- 3.5
- 3.1
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Question 25 of 25

25. Question
How is the PDU Session called in 5G :
- DNN
- APN
- ADA
- DNI
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