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NEW QUESTION 35
In high-speed and poor SINR scenarios, which is the best adaptive transmission mode?
- A. Closed loop transmission diversity
- B. Open loop transmission diversity
- C. Closed-loop spatial reuse
- D. Open-loop spatial reuse
Answer: B
NEW QUESTION 36
For the different system based on coverage switching, which of the following cases does the eNodeB only send the blind event A2 and not the measurement event A2? (Multiple Choice)
- A. The configured measurement event A2 threshold is lower than or equal to the blind event A2 threshold.
- B. UE does not support heterosystem measurement
- C. The configured measurement event A2 threshold is higher than the blind event A2 threshold.
- D. The average level of the serving cell is lower
Answer: A,B
NEW QUESTION 37
Which protocol layer does ROHC handle in LTE?
- A. RLC
- B. PDCP
- C. MAC
- D. RRC
Answer: B
NEW QUESTION 38
The PDSCH carries DL-SCH and PCH information.
- A. True
- B. False
Answer: A
NEW QUESTION 39
The NAS layer is a user plane protocol.
- A. True
- B. False
Answer: A
NEW QUESTION 40
Which of the following schemes does the CSFB program mainly support? (Multiple choice)
- A. Providing a voice solution under the LTE network
- B. Reuse the operator's traditional circuit domain network to protect investment and avoid operators deploying IMS system
- C. Providing short messages under the LTE network
- D. Location service
Answer: A,B,C,D
NEW QUESTION 41
Which of the following factors can be connected with the maximum downlink rate that the UE can achieve in the room system? (Multiple Choice)
- A. Cell uplink and downlink time slot ratio
- B. Path loss of the room system
- C. Cell transmission mode
- D. The isolation distance between two antennas in a two-way system
Answer: A,B,C,D
NEW QUESTION 42
Which of the following are the network interfaces of the LTE system? (Multiple choice)
- A. S5
- B. S1-MME
- C. IUB
- D. X2
Answer: A,B,D
NEW QUESTION 43
Which power in the physical channel determines the average power of the uplink channel?
- A. One subframe
- B. One SC-FDMA symbol
- C. One field
- D. One code channel
Answer: B
NEW QUESTION 44
The carrier-aggregated UE has only one PDCP/RLC entity.
- A. True
- B. False
Answer: A
NEW QUESTION 45
Which parameters may be carried in the air interface paging message?
- A. ueidentityindexvalue
- B. cn-Domain
- C. TAC
- D. Pagingattemptcount
Answer: C
NEW QUESTION 46
In the LTE system, which of the following sequences is generated by the preamble sequence?
- A. ZC sequence
- B. M sequence
- C. midamble code
Answer: A
NEW QUESTION 47
In the LTE system, which is the advantage of applying 64QAM compared to 16QAM?
- A. Simpler implementation
- B. Improved spectrum utilization
- C. Improved anti-noise, anti-fading ability
- D. Reduce the system error rate
Answer: B
NEW QUESTION 48
Which of the following are single site verified projects? (Multiple choice)
- A. LTE transmission test
- B. LTE FTP service function test
- C. LTE ping service function test
- D. LTE access function test
Answer: A,B,C,D
NEW QUESTION 49
Which network element does the UE-AMBR perform the speed limit?
- A. MME
- B. ENODEB
- C. UE
- D. SGW
Answer: B
NEW QUESTION 50
Which of the following is not included in the QoS Configuration?
- A. DSCP-QCI Mapping
- B. QoS Global Configuration
- C. UE Timer
- D. PBR Parameter
Answer: C
NEW QUESTION 51
Which sub-functions are the RF subsystem functions included in the following? (Multiple Choice)
- A. Complete uplink and downlink baseband data processing functions
- B. Provide interface of base station and the external clock source
- C. Provide interface of base station and antenna system
- D. Complete the send and receive processing functions of the wireless signal
Answer: C,D
NEW QUESTION 52
What is the mainly content that carried by MIB (Master Information Block)? (Multiple Choice)
- A. SI word information
- B. System frame number
- C. Bandwidth
- D. PHICH resource information
Answer: A,B,C,D
NEW QUESTION 53
Which of the following statements are true about the tools for single-site verification? (Multiple Choice)
- A. Probe is an air interface test tool, mainly used to collect LTE network air interface test data.
- B. CHR and one-click logging are used to collect call logs and the same running logs, through which you can share and locate common problems.
- C. Ethereal is a commonly used communication analysis tool that can be used to analyze KPIs and is very helpful for problem location.
- D. Iperf tool is a UDP filling tool for testing air interface capability. It can shield the application parameter setting problem and directly verify the LTE air interface.
Answer: A,B,D
NEW QUESTION 54
Which of the following are the counters available for CPU utilization measurement? (Multiple Choice)
- A. Average CPU usage of the board
- B. Maximum CPU usage of the board
- C. The minimum CPU usage of the board
- D. The CPU usage of the board is higher than the preset threshold.
Answer: B,C,D
NEW QUESTION 55
About LTE TDD special subframe description, which is correct?
- A. Special subframes include DwPTS, GP, and UpPTS
- B. Special subframes are used for uplink and downlink synchronization, uplink and downlink isolation.
- C. The guard interval is required from the uplink and downlink subframes to the downlink subframes and the downlink subframes to the uplink subframes.
- D. The length of the special subframe is also 1ms.
Answer: A,B,D
NEW QUESTION 56
How long is the TTI of the MIB (master information block)?
- A. 40ms
- B. 10ms
- C. 80ms
- D. 1ms
Answer: A
NEW QUESTION 57
The virtual resource block (VRB) is used to describe the LTE downlink transmission resource allocation mode, and the centralized resource mapping mode and the separate centralized resource mapping mode supported by the LTE downlink transmission resource.
- A. True
- B. False
Answer: A
NEW QUESTION 58
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