Pass H35-580_V2.0 Exam with Updated H35-580_V2.0 Exam Dumps PDF 2024
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NEW QUESTION # 16
Which of the following RF modules support 64T64R?(Select All that Apply)
- A. AAU5612
- B. AAU5313
- C. AAU5613
- D. RRU3939
Answer: B,C
Explanation:
Explanation
According to the Huawei Releases 5G Series Products, Huawei's AAU5313 and AAU5613 are both RF modules that support 64T64R. The AAU5313 is an ultra-wideband Massive MIMO product that supports both
64T64R and 400 MHz bandwidth on the C-band. The AAU5613 is a BladeAAU Pro product that supports 64T A+P integration on sub-3 GHz bands. The AAU5612 is a BladeAAU product that supports only 32T A+P integration on sub-3 GHz bands. The RRU3939 is not an AAU product but an RRU (Remote Radio Unit) product that supports only 8T8R on sub-3 GHz bands.
NEW QUESTION # 17
Which of the following logical channels can be mapped to different transport channels?
- A. PCCH
- B. DCCH
- C. BCCH
- D. CCCH
Answer: A,B,D
Explanation:
Explanation
According to the 5G NR Channels, the following logical channels can be mapped to different transport channels in the downlink and/or uplink:
Common Control Channel (CCCH): It can be mapped to Downlink Shared Channel (DL-SCH) or Uplink Shared Channel (UL-SCH).
Dedicated Control Channel (DCCH): It can be mapped to DL-SCH or UL-SCH.
Paging Control Channel (PCCH): It can be mapped to Paging Channel (PCH) or DL-SCH.
Broadcast Control Channel (BCCH): It can be mapped to Broadcast Channel (BCH) or DL-SCH.
NEW QUESTION # 18
Which of the following events is used by the gNodeB to trigger a blind redirection procedure?
- A. A4
- B. A3
- C. A1
- D. A2
Answer: B
Explanation:
Explanation
According to the Blind handover or blind redirection method and system, A3 is the event that is used by the gNodeB to trigger a blind redirection procedure. A3 is defined as "neighbour becomes offset better than serving" in 3GPP TS 38.331. When the gNodeB detects that the UE's signal quality on a neighbouring cell is better than that on the serving cell by a certain offset, it can initiate a blind redirection procedure to switch the UE to the neighbouring cell without requiring measurement reports from the UE.
NEW QUESTION # 19
Which of the following channels/signals require demodulation reference signals (DMRSs)?(Select All that Apply)
- A. DPDCCH
- B. DPOSCH
- C. DPBCH
- D. DCSI-RS
Answer: A,B,C
Explanation:
Explanation
According to the 5G NR Physical Layer Specifications, demodulation reference signals (DMRSs) are required for the following channels/signals in the downlink and uplink:
Downlink Physical Broadcast Channel (DPBCH)
Downlink Physical Downlink Control Channel (DPDCCH)
Downlink Physical Shared Channel (DPOSCH)
Uplink Physical Random Access Channel (PRACH)
Uplink Physical Uplink Control Channel (PUCCH)
Uplink Physical Uplink Shared Channel (PUSCH)
NEW QUESTION # 20
In the uplink rate test for NR users, which of the following values is the recommended uplink maximum MIMO layers for 2T4R UEs?
- A. Layer4
- B. Layer2
- C. Layer1
- D. Layer3
Answer: B
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, the uplink maximum MIMO layers for 2T4R UEs is 2, which corresponds to option B.
NEW QUESTION # 21
On a 5G network, the NAS layer uses 5G-GUTI to replace IMSI as the temporary ID of a UE for security reasons.
- A. False
- B. True
Answer: B
Explanation:
Explanation
According to the 5G-GUTI - 5G Globally Unique Temporary Identity, the NAS layer uses 5G-GUTI to replace IMSI as the temporary ID of a UE for security reasons. The 5G-GUTI is allocated by the AMF (Core Access and Mobility Management Function) at the time of network registration, and it is composed of the GUAMI (Globally Unique AMF ID) and the 5G-TMSI (5G Temporary Mobile Subscriber Identity).
NEW QUESTION # 22
Which of the following statements about Huawei AAUs are correct?(Select All that Apply)
- A. They support GSM-NR dual-mode on some frequency bands.
- B. AAUs have an operating voltage of -48 V DC.
- C. They support LTE-NR dual-mode on some frequency bands.
- D. 64T64R AAUs provide higher coverage gains than 32T32R AAUs.
Answer: B,C,D
Explanation:
Explanation
According to the Huawei's Latest AAU Products, Huawei's AAUs have an operating voltage of -48 V DC and support LTE-NR dual-mode on some frequency bands, such as C-band and sub-3 GHz bands. The article also states that Huawei's new-generation 64T64R AAUs provide higher coverage gains than conventional 32T32R AAUs by using ELAA (extremely large antenna array) technology. Huawei's AAUs do not support GSM-NR dual-mode on any frequency band, as GSM is not a compatible RAT with NR.
NEW QUESTION # 23
Which of the following SI messages must be read on a 5G network?
- A. SIB1
- B. SIB2
- C. SIB4
- D. SIB3
Answer: A
Explanation:
Explanation
According to the 5G SIB Messages, SIB1 is the only mandatory SI message that must be read on a 5G network. SIB1 contains essential information for accessing the network, such as cell identity, cell barring, and scheduling information for other SI messages. SIB2, SIB3, and SIB4 are optional SI messages that provide additional information such as radio resource configuration, intra-frequency cell reselection, and neighboring cell information.
NEW QUESTION # 24
In the MR-DC architecture, which of the following factors affect the data split on a base station?(Select All that Apply)
- A. PDCP layer buffer
- B. RLC layer buffer
- C. Air interface latency
- D. X2 latency
Answer: A,C,D
Explanation:
Explanation
According to the 5G-NR (EN-DC) Bearer Concept, in MR-DC (Multi-Radio Dual Connectivity) architecture, data split on a base station can be affected by the following factors:
PDCP layer buffer: The PDCP layer buffer stores user plane data before sending it to lower layers. The buffer size and occupancy can affect how data is split between LTE and NR bearers.
X2 latency: The X2 latency is the delay between LTE and NR base stations over the X2 interface. The X2 latency can affect how data is split between LTE and NR bearers by causing reordering or duplication of packets.
Air interface latency: The air interface latency is the delay between base stations and user equipment over the air interface. The air interface latency can affect how data is split between LTE and NR bearers by causing reordering or duplication of packets.
The RLC layer buffer does not affect data split on a base station because it is located below the PDCP layer where data split occurs.
NEW QUESTION # 25
Which of the following items can be used for measurement evaluation in idle mode during coverage problem analysis?
- A. SS-RSRP
- B. SRS
- C. OPMI
- D. CSI-RSRP
Answer: A
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, SS-RSRP is the reference signal received power of the synchronization signal block (SSB) in NR systems. It can be used for measurement evaluation in idle mode during coverage problem analysis, which corresponds to option D. OPMI is an indicator of uplink interference power measurement, CSI-RSRP is the reference signal received power of the channel state information reference signal (CSI-RS), and SRS is the sounding reference signal. These indicators are used for measurement evaluation in connected mode, not idle mode, which correspond to options A, B, and C.
NEW QUESTION # 26
Which of the following AAUs support vertical beamforming?(Select All that Apply)
- A. 8T8R
- B. 64T64R
- C. 4T4R
- D. 32T32R
Answer: B,D
Explanation:
Explanation
According to the 5G Beamforming: An Engineer's Overview, 32T32R and 64T64R AAUs support vertical beamforming. AAU stands for Active Antenna Unit, which is a type of antenna that integrates RF and antenna functions in one unit. Vertical beamforming is a technique that uses multiple antenna elements in a vertical array to form beams in different elevation angles. 32T32R and 64T64R AAUs have enough antenna elements to support vertical beamforming, while 8T8R and 4T4R AAUs do not have enough antenna elements to support vertical beamforming effectively.
NEW QUESTION # 27
In cases where the same devices are used, which of the following link budget parameters may differ depending on use in either densely populated urban areas or rural areas?(Select All that Apply)
- A. Antenna gain
- B. Penetration loss
- C. Area coverage rate
- D. Shadow fading margin
Answer: B,C,D
Explanation:
Explanation
The link budget parameters that may differ depending on use in either densely populated urban areas or rural areas are area coverage rate, shadow fading margin, and penetration loss. The area coverage rate is the percentage of area within a cell that can receive a signal above a certain threshold. In densely populated urban areas, the area coverage rate may be lower than in rural areas due to more interference and obstacles 13. The shadow fading margin is an additional margin added to the link budget to account for the variation of signal strength due to obstacles in the propagation path. In densely populated urban areas, there may be more buildings and structures that cause shadow fading than in rural areas, so a larger shadow fading margin may be needed 14. The penetration loss is the loss of signal strength when it passes through walls or windows into buildings. In densely populated urban areas, there may be more indoor users than in rural areas, so a larger penetration loss may be considered 15. The antenna gain is not a parameter that depends on use in either densely populated urban areas or rural areas. It is a parameter that depends on the antenna design and configuration, which are usually fixed for a given system 16.
NEW QUESTION # 28
Which of the following is not the cause of cell unavailability due to system faults (specified using
N.Cell.Unavail.Dur.System)?
- A. Faults on an RF module's TX or RX channels
- B. Board faults
- C. Blocking cells by using MML commands
- D. CPRI link faults
Answer: C
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, cell unavailability due to system faults (specified using
N.Cell.Unavail.Dur.System) is caused by factors such as CPRI link faults, board faults, and faults on an RF module's TX or RX channels, which correspond to options A, C, and D. Blocking cells by using MML commands is not a system fault, but a manual operation, which corresponds to option B.
NEW QUESTION # 29
In NSA networking, which of the following methods can be used to support X2 interconnection between an eNodeB and a gNodeB?(Select All that Apply)
- A. Interconnection via backplane in a subrack
- B. IPRAN interconnection between subracks
- C. Interconnection through CI interfaces on the UMPT boards in different subracks
- D. Interconnection through HEI interfaces on the UBBP boards in different subracks
Answer: B,C
Explanation:
Explanation
According to the 5G EN-DC Architecture and Interfaces, there are two methods that can be used to support X2 interconnection between an eNodeB and a gNodeB in NSA networking:
Interconnection through CI interfaces on the UMPT boards in different subracks: The UMPT is a universal main processing and transmission unit that provides main processing and transmission functions for a subrack. The UMPT has two CI interfaces that can be used for X2 interconnection with other base stations. The CI interfaces support CPRI, OBSAI, and eCPRI protocols and can use optical fibers or electrical cables for transmission. The CI interfaces can be configured as master or slave interfaces depending on the network topology.
IPRAN interconnection between subracks: IPRAN is an IP-based radio access network that uses IP transport technologies to carry base station traffic over Ethernet or MPLS networks. IPRAN can support X2 interconnection betweendifferent base stations by using IP routers or switches. IPRAN can provide flexible networking, high bandwidth, low latency, and high reliability for X2 interconnection.
The other two methods are not valid for X2 interconnection between an eNodeB and a gNodeB:
Interconnection via backplane in a subrack: This method is only applicable for X2 interconnection between two eNodeBs or two gNodeBs that are installed in the same subrack. The backplane is the internal bus that connects different boards within a subrack. The backplane supports CPRI, OBSAI, and eCPRI protocols and can provide high-speed data transmission between boards.
Interconnection through HEI interfaces on the UBBP boards in different subracks: This method is not supported by Huawei base stations. The HEI interface is a high-speed Ethernet interface that is used for data transmission between base stations and core networks or transport networks. The HEI interface supports S1, Xn, F1, E1, and N2 protocols and can use optical fibers or electrical cables for transmission. The HEI interface cannot be used for X2 interconnection between base stations.
Therefore, the correct answer is A and D.
NEW QUESTION # 30
5G can meet service requirements in scenarios with a mobility speed of up to 500 km/h.
- A. False
- B. True
Answer: B
Explanation:
Explanation
According to the Huawei Career Certification Learning, 5G can meet service requirements in scenarios with a mobility speed of up to 500 km/h, which is much higher than the 4G limit of 350 km/h.
NEW QUESTION # 31
Which of the following factors does not need to be considered during PUSCH power calculation?
- A. SCS configuration for the PUSCH
- B. Number of PUSCH symbols in the time domain
- C. MCS index of the PUSCH
- D. Number of PUSCH RBs
Answer: C
Explanation:
Explanation
According to the 5G NR Uplink Power Control Procedure, MCS index of the PUSCH is not a factor that needs to be considered during PUSCH power calculation. The MCS index determines the modulation and coding scheme of the PUSCH, but it does not affect the transmit power. The other factors, such as number of PUSCH RBs, SCS configuration for the PUSCH, and number of PUSCH symbols in the time domain, are all involved in the PUSCH power calculation formula.
NEW QUESTION # 32
Which of the following materials does not need to be prepared before site survey?
- A. Engineering file
- B. Local map
- C. 5G antenna height table
- D. Site survey table
Answer: A
Explanation:
Explanation
According to the 5G Site Survey Guide (V1.0) (PDF)-EN, the engineering file is not a material that needs to be prepared before site survey. The engineering file is a document that records the site survey results and the design plan for the site. The engineering file is generated after the site survey is completed and approved by the customer. The materials that need to be prepared before site survey are:
Local map: A map of the area where the site is located, showing the roads, buildings, landmarks, and other features. The local map helps the site survey team to plan the route, identify the site location, and evaluate the surrounding environment.
Site survey table: A table that lists the items and parameters that need to be checked and measured during the site survey, such as antenna installation space, equipment room space and load bearing capacity, power supply, grounding, lightning protection, cable routing, etc. The site survey table helps the site survey team to conduct a comprehensive and systematic inspection of the site conditions and record the data.
5G antenna height table: A table that shows the recommended antenna height for different scenarios and frequency bands based on empirical data and theoretical calculations. The 5G antenna height table helps the site survey team to determine the optimal antenna installation height for achieving the best coverage and performance.
Therefore, the correct answer is D.
NEW QUESTION # 33
How many RBs are included when a bandwidth of 100 MHz and a subcarrier spacing of 60 kHz are used in a
5G cell?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
Explanation
To find the number of RBs in a 5G cell, we need to know the bandwidth and the subcarrier spacing of the cell.
The bandwidth is the total frequency range allocated for the cell, while the subcarrier spacing is the frequency separation between adjacent subcarriers in the cell. A RB is a group of 12 consecutive subcarriers in the frequency domain 12. Therefore, the number of RBs in a 5G cell can be calculated by dividing the bandwidth by the product of the subcarrier spacing and 12.
Given that the bandwidth is 100 MHz and the subcarrier spacing is 60 kHz, we can use the following formula to find the number of RBs:
Number of RBs = Bandwidth / (Subcarrier spacing * 12) Number of RBs = 100 MHz / (60 kHz * 12) Number of RBs = 100000 kHz / 720 kHz Number of RBs = 138.888...
However, since the number of RBs must be an integer, we need to round it down to the nearest multiple of
3 3. This is because the NR standard defines different frequency ranges for different subcarrier spacings, and each frequency range has a minimum and maximum number of RBs that are multiples of 3 4. For example, for subcarrier spacing of 60 kHz, the frequency range is from 24250.08 MHz to 52600.08 MHz, and the minimum and maximum number of RBs are 66 and 273, respectively.
Therefore, the closest multiple of 3 to 138.888... is 135. However, this number is not valid because it is lower than the minimum number of RBs for subcarrier spacing of 60 kHz. The next valid multiple of 3 is 273, which is also the maximum number of RBs for subcarrier spacing of 60 kHz. Therefore, the correct answer is C. 273.
NEW QUESTION # 34
In the NSA DC architecture, which of the following procedures is triggered when a UE moves to a neighboring gNodeB?
- A. SgNB release procedure
- B. MeNB change procedure
- C. SgNB change procedure
- D. MeNB release procedure
Answer: C
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, in the NSA DC architecture, when a UE moves to a neighboring gNodeB, the SgNB change procedure is triggered, which corresponds to option D.
NEW QUESTION # 35
Which of the following counters can be measured at the board level?
- A. CCE usage
- B. Number of paging messages
- C. CPU usage
- D. Transmission interface measurement
Answer: C,D
Explanation:
Explanation
According to the Career Certification - Huawei Enterprise, CPU usage and transmission interface measurement are counters that can be measured at the board level, which correspond to options A and B. They reflect the performance and status of the boards in a base station. Number of paging messages and CCE usage are counters that can be measured at the cell level, which correspond to options C and D. They reflect the utilization of radio resources in a cell.
NEW QUESTION # 36
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