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NEW QUESTION # 15
Which two statements are valid for Call Re-establishment in WCDMA? (Choose two.)
- A. When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE goes to idle mode.
- B. Call Re-establishment in WCDMA targets RL failures or RLC errors in the DL.
- C. When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE selects a new cell using the soft handover procedure.
- D. Call Re-establishment in WCDMA improves the voice drop rate.
Answer: C,D
NEW QUESTION # 16
Which two statements correctly describe Single Carrier Frequency Division Multiple Access (SC-FDMA) as used in LTE systems using uplink SIMO? (Choose two.)
- A. SC-FDMA is beneficial because it avoids (nter-cell interference.
- B. SC-FDMA allows simultaneous uplink transmissions on the same physical resource blocks.
- C. SC-FDMA is beneficial because it avoids intra-cell interference.
- D. SC-FDMA separates uplink transmissions in the time and/or frequency domain.
Answer: B,C
NEW QUESTION # 17
Review the exhibit.
Cell A has neighbor relations with cells B and C which share the same frequency and PCI. Cells B and C do not share any overlapping area.
Referring to the exhibit which statement is correct?
- A. Handover performance of cell B is affected.
- B. Handover performance of cell A is affected.
- C. Handover performance of cell C is affected.
- D. There is no degraded performance expected in any of the cells.
Answer: B
NEW QUESTION # 18
Which two statements about physical resource blocks (PRB)s are correct? (Choose two.)
- A. The number of PRBs assigned for a user is dependent on the number of active users in the cell.
- B. A higher throughput is expected when more DL PRBs are assigned to a user for a TTI.
- C. The maximum number of assigned PRBs for a TTI can exceed the number of available PRBs in the cell for that TTI.
- D. The DL PRB distribution is not affected by the number of active cell users in the cell.
Answer: A,B
NEW QUESTION # 19
Which two statements are correct about a Self-Organizing Network (SON)? (Choose two.)
- A. SON is a centralized solution that automatically collects data and modifies parameters using a predefined algorithm.
- B. SON is a drive test measurement tool for evaluation of network quality and new site location proposals.
- C. SON is a trace collection procedure for coverage prediction and reporting purposes.
- D. SON is a combination of functions that automatically change network behavior.
Answer: A,D
NEW QUESTION # 20
Review the exhibit.
A new residential area has recently been built showing a lack of 3G uplink coverage as shown in the exhibit.
The terrain is flat and all the buildings in the area are 20 meters in height with no other relevant direct obstacles.
What should be applied to cells A_l and 8_1 to provide 3G service to the new area knowing that both cells have a soft handover (SHO) factor of 1.9?
- A. Increase the CPICH power.
- B. Increase the electrical downtilt.
- C. Reduce the antenna height.
- D. Change the azimuth.
Answer: D
NEW QUESTION # 21
Which two channel bandwidths are available in LTE? (Choose two.)
- A. 1.4 MHz
- B. 30 MHz
- C. 15 MHz
- D. 2.8 MHz
Answer: A,C
NEW QUESTION # 22
According to IR.92, which two LTE RAN functions are required to support VoLTE? (Choose two.)
- A. Inter-frequency handover
- B. Multiple Radio Bearers per User
- C. RLC in Unacknowledged Mode for RTP transmissions
- D. Service Specific Inactivity Timer
Answer: B,D
NEW QUESTION # 23
Which two statements are correct about voice quality in a VoLTE network? (Choose two.)
- A. Increasing silent gaps in the received audio signal will improve voice quality.
- B. Increasing jitter will improve voice quality.
- C. Decreasing jitter will Improve voice quality.
- D. Decreasing silent gaps in the received audio signal will improve voice quality.
Answer: C,D
NEW QUESTION # 24
Which two statements are true about the Antenna Integrated Radio (AIR)? (Choose two.)
- A. The AIR can replace the standard RU/RRU and antenna.
- B. The AIR is a hardware unit that integrates the radio and the antenna.
- C. The AIR in an LTE system is directly connected with the MME using the SI interface.
- D. The AIR replaces the digital/baseband unit.
Answer: A,B
NEW QUESTION # 25
Which identifier is used for locating a UE in a standalone LTE network?
- A. RAC
- B. TAC
- C. URAC
- D. LAC
Answer: B
NEW QUESTION # 26
What are two benefits of massive MIMO? (Choose two.)
- A. It serves many users in the same time and frequency with a single element antenna.
- B. It serves many spatially separated users in the same time and frequency.
- C. It increases SINR by focusing a signal toward an individual user.
- D. It increases throughput by allowing access to larger spectrum slices.
Answer: B,D
NEW QUESTION # 27
You are making a frequency plan for a new site and you need to create an interference matrix for new GSM sectors.
In this scenario, which three inputs should you use? (Choose three.)
- A. propagation model
- B. type of terrain in the area
- C. antenna height
- D. BAL measurements made by UEs
- E. location area code plan
Answer: A,B,C
NEW QUESTION # 28
Which two statements about the Radio Connection Supervision (RCS) algorithm in LTE are correct? (Choose two.)
- A. It collects radio problems and inactivity information with the purpose to release resources.
- B. It selects the number of PRBs assigned to users for downlink and uplink.
- C. It controls the modulation and coding scheme used in DL transmissions.
- D. It supervises the radio connection between E-UTRAN and a UE in connected mode.
Answer: A,D
NEW QUESTION # 29
What is an advantage of using flexible numerology in New Radio (NR) 5G?
- A. It provides a non defined link between subcarriers used in LTE and NR.
- B. It allows an alphanumeric mapping between physical data channels on coslted LTE and NR in non-standalone scenarios.
- C. It ensures that the same subcarrier bandwidth is used in NR in both high and low frequencies.
- D. It maintains a more consistent overhead over a very large range of carrier frequencies.
Answer: B
NEW QUESTION # 30
What is a purpose of Radio Resource Management (RRM) parameter optimization tools?
- A. coverage predictions
- B. traffic balancing
- C. geo-location procedures
- D. azimuth adjustment
Answer: B
NEW QUESTION # 31
What Is the purpose of the Location/Tracking Area update?
- A. It is used to locate the originating UE.
- B. It is used to locate the best IRAT cells.
- C. It is used to internally locate UEs during on-going calls.
- D. It is used to locate the UEs in idle mode.
Answer: D
NEW QUESTION # 32
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