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TEST 1

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Question 1 of 30

1. Question
Which type of spaceborn satellite doesn’t exist today :
- LEO
- MEO
- GEO
- TEO
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Question 2 of 30

2. Question
Which type of Airborn pseudo satellite doesn’t exist today :
- LAPS
- HAPS
- A2B
- A2G
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Question 3 of 30

3. Question
At which altitude GEO satellites are located
- < 35000 km
- > 35000 km
- > 25000km
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Question 4 of 30

4. Question
At which altitude LEO satellites are located
- Between 500km and 1,500km
- Between 1500 and 3500 lm
- Below 600km
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Question 5 of 30

5. Question
At which altitude MEO satellites are located
- Between 5,000km and 12,000km
- Between 600km and 5000 Km
- Below 600km
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Question 6 of 30

6. Question
What is orbital period of LEO satellite :
- 10 – 40 minutes
- 2 – 8 hours
- 24h
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Question 7 of 30

7. Question
the feeder link is located between the satellite-based NTN gateway and the satellite
- True
- False
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Question 8 of 30

8. Question
the service link is located between the satellite and the UE
- True
- False
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Question 9 of 30

9. Question
What is the first 3GPP Release in which satellite is being supported
- Release 15
- Release 16
- Release 17
- Release 18
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Question 10 of 30

10. Question
What is the frequency range of S band :
- 2-4 Ghz
- 4-6 Ghz
- 11-14 Ghz
- 20-30 Ghz
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Question 11 of 30

11. Question
What is the frequency range of Ku band :
- 2-4 Ghz
- 4-6 Ghz
- 11-14 Ghz
- 20-30 Ghz
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Question 12 of 30

12. Question
What is the frequency range of Ka band :
- 2-4 Ghz
- 4-6 Ghz
- 11-14 Ghz
- 20-30 Ghz
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Question 13 of 30

13. Question
Which one is a known commercial satellite constellation
- STARLINK
- LIGHTSPEED
- ONWEB
- All of them
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Question 14 of 30

14. Question
Which one is not considered an NTN NG RAN architecture :
- Transparent NTN NG RAN Architecture
- Regenerative NTN NG RAN Architecture
- Legacy NTN NG RAN Architecture
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Question 15 of 30

15. Question
“satellite access node” is composed from : payload + feeder link + gateway + gNB
- True
- False
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Question 16 of 30

16. Question
In Regenerative NTN NG RAN Architecture, gNB is localted in the sky :
- True
- False
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Question 17 of 30

17. Question
In Release 17/18, 3GPP works on standardization of the Regenerative payload option
- True
- False
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Question 18 of 30

18. Question
Inter-Satellite Links (ISL) are transport links between NTN platforms that require xxxx on
board the satellites.
- Regenrative payload
- Transparent payload
- Legacy payload
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Question 19 of 30

19. Question
One advantage of the regenerative architecture is the reduction of latency
- True
- False
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Question 20 of 30

20. Question
a set of data that describes the position and velocity of a satellite is called :
- Celestial
- Ephemeris
- Epheris
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Question 21 of 30

21. Question
differential delay is defined as the delay difference between the longest delay and the
shortest delay
- True
- False
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Question 22 of 30

22. Question
The shortest Round Trip Time should be observed at the
- Egress position
- Ingress position
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Question 23 of 30

23. Question
Ionospheric scintillation caused by small-scale structures in the ionosphere, is considered
- below 6 GHz
- below 6 GHz Above 6 Ghz
- Above 20 Ghz
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Question 24 of 30

24. Question
What are the Impact of Non-Terrestrial Networks on physical layer :
- Long delays
- Doppler shift
- high path attenuation
- All of them
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Question 25 of 30

25. Question
Round trip delay in GEO satellite is around :
- 50ms
- 200ms
- 600ms
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Question 26 of 30

26. Question
How many HARQ processes are theoritically needed in LEO Satellites
- 16
- 50
- 100
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Question 27 of 30

27. Question
What are the LTE-based IoT technologies used also for NTN
- LTE-M, Nb-IoT
- LTE-M, LORA
- Nbi-IoT, Sigfox
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Question 28 of 30

28. Question
What are are the architectures specified for IoT NTN :
- Gateway-based access architecture
- Direct access IoT NTN architecture
- Both of them
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Question 29 of 30

29. Question
Dealing with long propagation delays requires modifications of many timing aspects in NR
from physical to higher layers.
- True
- False
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Question 30 of 30

30. Question
The Doppler shift is observed when the satellite is moving in relation to an
observer or vice versa
- True
- False
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