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NEW QUESTION 33
According to the road test, it is found that there are co-channel interferences in the two base stations A and B in a local network. Which of the following measures cannot effectively reduce the co-channel interference of the two stations?
- A. Reduce the distance between the two base stations A and B
- B. Lower the antenna height of the base stations A and B and increase the antenna downtilt angle
- C. Adjust the frequency of the interfered cell in the base stations A
- D. Using technologies such as power control
Answer: A
NEW QUESTION 34
Which of the following parameters is not used for different system cell reselection control?
- A. sNonintraSearch
- B. ThreshXHigh
- C. ThreshXLow
- D. sIntraSearch
Answer: D
NEW QUESTION 35
Which of the following are characteristics of the DAS indoor coverage program?
- A. Easy to evolve and upgrade
- B. Ensure deep coverage
- C. Easy access to property access
- D. High cost of new DAS
- E. Support multi-operator multi-system multi-band
Answer: A,B,D,E
NEW QUESTION 36
Which of the following options are the handover scenario that the LTE room subsystem need to consider? (Multiple choice)
- A. Lobby entrance
- B. Garage entrance
- C. High-rise window
- D. Elevator mouth
Answer: A,B,C,D
NEW QUESTION 37
Which of the following services of the M2000 server resolves the packets reported by the NE to a unified structure, and the performance service stores the data required by the user into the performance database?
- A. Physics
- B. Application
- C. IP
- D. Adaptation
Answer: D
NEW QUESTION 38
Which of the following are the reasons for the establishment of a service-related RRC connection? (Multiple Choice)
- A. MT-Access
- B. MO-Access
- C. MO-Data
- D. MT-Data
Answer: A,D
NEW QUESTION 39
Which of the following parameters can be selected and viewed in the Probe 's View window (View)?
- A. Troughput
- B. MCS
- C. CQI
- D. A2 offset
Answer: A,B,C
NEW QUESTION 40
Which of the following radio bearers can carry NAS messages? (Multiple Choice)
- A. SRB0
- B. SRB1
- C. SRB3
- D. SRB2
Answer: C
NEW QUESTION 41
What information is determined by the location of the PHICH resource for each upstream user? (Multiple Choice)
- A. Number of PHICH channel groups
- B. PHICH channel duration
- C. Number of PHICH processes
- D. User's PUSCH information location
Answer: A,B,D
NEW QUESTION 42
Which of the following are events that support cross-system mobility?
- A. A4
- B. B2
- C. B1
- D. A1
Answer: B,C
NEW QUESTION 43
In which of the following cases will the mobile phone initiate a Service Request process? (Multiple Choice)
- A. When the UE has no RRC connection and there is uplink data initiation request
- B. E initiates location update
- C. When E is in the ECM IDLE state and there is downlink data reached
- D. When the phone is initially turned on
Answer: A,C
NEW QUESTION 44
Which of the following measures can help solve the problem of ping-pong switching in the same-frequency LTE cell? (Multiple Choice)
- A. Increase the filter factor
- B. Add eventA3Offset
- C. Decrease Hysteresis
- D. Add Timetotrigger
Answer: A,B,D
NEW QUESTION 45
Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.
- A. False
- B. True
Answer: A
NEW QUESTION 46
Which of the following is not the NB-IoT downlink physical channel?
- A. NPDCCH
- B. NPBCH
- C. NPHICH
- D. NBDSCH
Answer: C
NEW QUESTION 47
Among the following random access scenarios, which are the contention-based scenarios? (multiple choice)
- A. Initial access in idle mode
- B. Upstream out-of-synchronization status requires upstream data transmission
- C. Uplink out-of-synchronization state requires downlink data transmission
- D. RRC reestablishment after the out-of-synchronization of the wireless link
- E. Switch to a new cell
Answer: A,B,D
NEW QUESTION 48
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 average level of the serving cell is lower
- B. The configured measurement event A2 threshold is lower than or equal to the blind event A2 threshold.
- C. UE does not support heterosystem measurement
- D. The configured measurement event A2 threshold is higher than the blind event A2 threshold.
Answer: B,C
NEW QUESTION 49
Which layer of the LTE air interface performs encryption and integrity protection?
- A. RLC
- B. PDCP
- C. PHY
- D. MAC
Answer: B
NEW QUESTION 50
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