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Módulo 3 - Week 02

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Quiz da aula síncrona: Módulo 3 - Week #02
Compilado de questões referentes ao Módulo 3 do Curso de Formação HCIA 5G. Esse formulário não será usado para fins de avaliação.
C-band is the main frequency band of 5G. Currently, a maximum of 100 MHz bandwidth can be deployed. Uplink and downlink imbalance can be resolved by the uplink and downlink decoupling feature.
"A. True
B. False"
Which of the following technologies can shorten the air interface latency?
"A. High-level Modulation
B. Massive MIMO
C. Flexible Frame Structure
D. F-OFDM"
Which ones of the following statements about millimeter waves are incorrect?
"A. Newly introduced in NR which has the maximum cell bandwidth
B. The available frequency resouce is limited, most of which was occupied by current systems
C. The lower the frequency band is, the better the coverage is
D. Coverage capability is poor and requirements on RF components are high”
Which of the following 5G key technologies cannot improve the 5G service rate?
"A. New coding technology
B. Higher frequency bands
C. High-order modulation technique
D. Massive MIMO"
Because of the high frequency band of milimeter wave, the penetration loss of it is very small
"A. True
B. False"
Which of the following is a solution for 5G to switch uplink transmission to the sub-3 GHz low frequency band, effectively compensating for insufficient uplink coverage of the C-Band?
"A. UL and DL decoupling
B. Carrier aggregation
C. Duplex technology
D. Multiple access technique"
Which of the below frequency bands is the C-Band supported by 5G?
"A. 2600 MHz
B. 3.5GHz
C. 28G
D. 700MHz"
Polar coding is used as the coding scheme for control channel due to its excellent performance on small packet transmission.
"A. True
B. False"
In 5G system, spectrum utilization can be improved by using the F-OFDM technology. When the SCS is 30 kHz, which system bandwidth is of the maximum spectrum utilization?
"A. 20 MHz
B. 80 MHz
C. 60 MHz
D. 100 MHz"
Which of the following coding schemes is predominantely used for the traffic channel in 5G?
"A. LDPC
B. Convolutional code
C. Turbo coding
D. Polar code"
Which of the following massive MIMO statements are correct?
"A. Massive MIMO uses large-scale antenna arrays
B. Massive MIMO improves capacity of single cell
C. Only horizontal beamforming is available
D. Legacy wide beams are replaced with narrow beams by adjusting then beam weight"
Which of the following technical solutions improve the 5G rate?
"A. Increase bandwidth
B. Dual connectivity
C. Channel coding
D. Massive MIMO"
5G is compatible with the LTE modulation mode. In addition, the 256QAM is introduced in the downlink, which is higher than the LTE modulation technology.
"A. True
B. False"
To enhance the spectrum efficiency, massive MIMO technology is introduced in 5G network, whose maximum number of antennas may reach 64T64R
"A. True
B. False"
What kinds of gains can be brought by the SUL technology used in 5G?
"A. Improve C-Band uplink coverage
B. Improve C-Band downlink coverage
C. Reduce 5G deployment costs
D. Use original 4G resources effectively"