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Question 1 of 20

1. Question
Which frequency band is defined for FRMCS around 900 MHz?
- n78
- n41
- n258
- n100
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Question 2 of 20

2. Question
FRMCS is primarily based on which mobile technology?
- 4G LTE
- Wi-Fi
- 3G
- 5G
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Question 3 of 20

3. Question
Which duplex mode is used by FRMCS band n100?
- FDD
- TDD
- Half-duplex
- Simplex
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Question 4 of 20

4. Question
What is the typical channel bandwidth used in GSM-R?
- 20 MHz
- 200 kHz
- 5 Mhz
- 1 Mhz
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Question 5 of 20

5. Question
Which band typically provides the best coverage for railway lines?
- 900 MHz
- 1900 MHz
- 26 GHz
- 60 GHZ
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Question 6 of 20

6. Question
Why might 1900 MHz be used in FRMCS deployments?
- Additional network capacity
- Better propagation than 900 MHz
- Higher coverage radius
- Lower interference
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Question 7 of 20

7. Question
What is one challenge when deploying TDD networks?
- Need for larger antennas
- Higher transmission power
- Lack of PRBs
- Synchronization between base stations
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Question 8 of 20

8. Question
What technique allows 5G to avoid GSM-R carriers during coexistence?
- Beamforming
- Carrier aggregation
- Subcarrier muting within OFDM
- Power boosting
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Question 9 of 20

9. Question
Why might a train use both 900 MHz and 1900 MHz simultaneously?
- Encryption improvement
- Spectrum regulation
- Reduced latency only
- Carrier aggregation to increase throughput
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Question 10 of 20

10. Question
Why is FRMCS migration from GSM-R gradual rather than immediate?
- GSM-R equipment cannot be removed quickly
- Railway safety services must remain operational
- 5G does not support voice services
- Spectrum is unlimited
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Question 11 of 20

11. Question
In TDD systems like n101, what determines DL vs UL capacity?
- Antenna height
- Guard band size
- DL/UL slot configuration
- ARFCN allocation
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Question 12 of 20

12. Question
Which architectural concept isolates train control traffic from passenger traffic?
- Network slicing
- Carrier aggregation
- HARQ scheduling
- Massive MIMO
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Question 13 of 20

13. Question
Why is GSM-R and FRMCS coexistence planning critical?
- GSM-R narrowband channels may interfere with 5G
- GSM-R requires higher power
- 5G cannot operate in licensed spectrum
- FRMCS does not support voice
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Question 14 of 20

14. Question
What is the main purpose of MCPTT in FRMCS?
- Railway ticket authentication
- Mission critical push-to-talk communication
- Railway ticket authentication
- Mission critical push-to-talk communication
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Question 15 of 20

15. Question
Which protocol is primarily used for call signaling in MC services?
- HTTP
- FTP
- SNMP
- SIP
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Question 16 of 20

16. Question
What does the PC5 reference point enable?
- Device-to-device communication
- Core network communication
- Satellite connectivity
- IMS signaling
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Question 17 of 20

17. Question
Which of the following is a typical FRMCS MCPTT call type?
- Blockchain call
- Emergency call
- Satellite call
- Wi-Fi call
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Question 18 of 20

18. Question
Before accessing Mission Critical services, what must occur first?
- IMS registration
- Group call request
- 5G registration and PDU session establishment
- Floor control negotiation
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Question 19 of 20

19. Question
Which mechanism allows a single stream to reach many receivers efficiently?
- Multicast/Broadcast service
- SIP trunking
- TCP tunneling
- HTTP streaming
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Question 20 of 20

20. Question
Which QoS 5QI value is used for MC media plane in FRMCS?
- 10
- 3
- 65
- 99
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