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NEW QUESTION 142
Which of the following is the length of a regular CP in the physical layer of the TD-LTE system?
- A. 16.67μs
- B. 9.77μs
- C. 33.33μs
- D. 4.69μs
Answer: D
NEW QUESTION 143
Which of the following two NEs is the ERAB bearer established in LTE?
- A. Established between the UE and the S-GW
- B. Established between the eNB and the S-GW
- C. Established between the UE and the eNB
- D. Established between the UE and the P-GW
Answer: A
NEW QUESTION 144
Which of the following 3GPP versions begins to define the relevant protocols for LTE?
- A. R9
- B. R8
- C. R6
- D. R7
Answer: B
NEW QUESTION 145
LTE inter-frequency handoff can be based on which of the following events? (Multiple Choice)
- A. A5
- B. A3
- C. A4
- D. B1
Answer: A,B,C
NEW QUESTION 146
Which of the following parameters is an important indicator of downlink coverage? (Multiple choice)
- A. SINR
- B. RSRP
- C. Business delay
- D. Throughput rate
Answer: A,B,D
NEW QUESTION 147
What respectively are the mainstream sub-frame ratio and special subframe ratio of project delivery TDD LTE in China?
- A. SA2, SSP7
- B. SA5, SSP2
- C. SA2, SSP5
- D. SA5, SSP7
Answer: C
NEW QUESTION 148
Which of the following formats are supported for LTE data configuration files to export? (Multiple choice)
- A. TXT
- B. DBS
- C. MML
- D. XML
Answer: B,D
NEW QUESTION 149
Which of the following is the number of types of LTE UEs defined by the R8 protocol?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 150
When the system bandwidth is 20M in the LTE system, what is the theoretical reference value of the (FDD) unloaded RSSi?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 151
Which of the following interfaces uses both the GTP-C protocol and the CTP-U protocol?
- A. S5/S8
- B. S1-MME
- C. S6a
- D. S11
Answer: A
NEW QUESTION 152
Which of the following wireless frame structures is used for TDD LTE?
- A. frame type 3
- B. frame type 2
- C. frame type 4
- D. frame type 1
Answer: B
NEW QUESTION 153
Which of the following belong to the transport physical layer fault? (Multiple choice)
- A. Base station DEVIP configuration error
- B. The optical module does not match the peer device.
- C. The port attribute settings of the base station and the peer transmission device are inconsistent.
- D. VLAN configuration error
- E. Damage to optical fiber and optical module
Answer: B,C,E
NEW QUESTION 154
In the LTE time synchronization scheme, which of the following time synchronization servers are available for the network? (Multiple choice)
- A. MME
- B. Network management server
- C. GPS
- D. NTP server
Answer: B,C,D
NEW QUESTION 155
The MIMO mode is divided into diversity and multiplexing, where diversity is mainly to improve cell coverage, and multiplexing is mainly to improve cell capacity.
- A. True
- B. False
Answer: A
NEW QUESTION 156
When expanding CP, 1 PRB contains 84 symbols.
- A. False
- B. True
Answer: A
NEW QUESTION 157
The optical modules at both ends of the same fiber must be at the same wavelength and rate, and the transmission distance can be different.
- A. False
- B. True
Answer: A
NEW QUESTION 158
What are the advantages of BBU3910 compared to BBU3900? (Multiple choice)
- A. Support outdoor open air installation
- B. Backplane exchange capacity is greater
- C. Higher performance
- D. The backplane is fully interconnected
Answer: B,C,D
NEW QUESTION 159
How many kinds of uplink and downlink ratios can TDD LTE support?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 160
Which of the following factors is not considered when calculating the downlink budget?
- A. Base station receiver sensitivity
- B. Downlink maximum propagation loss
- C. Feeder losses
- D. Human body loss
Answer: A
NEW QUESTION 161
In which of the following processes, the MME cannot allocate a TA List to the UE?
- A. GUTI Reallocation Process
- B. TAU process
- C. Service Request process
- D. Attach process
Answer: C
NEW QUESTION 162
Which of the following features are included by eNodeB? (Multiple Choice)
- A. UE attachment MME option
- B. Wireless resource management related functions, including wireless load control, admission control, connection mobility management, uplink/downlink dynamic resource allocation/scheduling, etc
- C. Idle state mobility management
- D. Configuration of measurement and measurement report
Answer: A,B,D
NEW QUESTION 163
When the user is in ECM-IDLE state, which of the following is the user's location granularity that the network can know?
- A. Do not know any location information
- B. TA list
- C. Cell
- D. TA
Answer: B
NEW QUESTION 164
The USB port on the UMPT board can be used for near-end opening.
- A. True
- B. False
Answer: A
NEW QUESTION 165
The PDCP protocol entity implements IP header compression function on the user side.
- A. True
- B. False
Answer: A
NEW QUESTION 166
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