[Dec-2023] Huawei H35-580_V2.0 Actual Questions and Braindumps
Pass H35-580_V2.0 Exam with Updated H35-580_V2.0 Exam Dumps PDF 2023
NEW QUESTION # 21
Which of the following logical channels can be mapped to different transport channels?
- A. BCCH
- B. DCCH
- C. CCCH
- D. PCCH
Answer: B,C,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 # 22
Which of the following common messages need to be scheduled?(Select All that Apply)
- A. MIB
- B. SIB
- C. RA Response
- D. Paging
Answer: A,B,D
Explanation:
Explanation
According to the 5G NR Physical Layer Specifications, Paging, SIB, and MIB are common messages that need to be scheduled. Paging is a message that is used to notify a UE of incoming data or system information when it is in idle mode or connected mode inactive state. SIB stands for System Information Block, which is a message that contains various system parameters and configuration information for UEs. MIB stands for Master Information Block, which is a message that contains essential system information such as system frame number and subcarrier spacing. These common messages need to be scheduled because they are transmitted periodically and have fixed time-frequency resources.
NEW QUESTION # 23
Which of the following channels/signals require demodulation reference signals (DMRSs)?(Select All that Apply)
- A. DCSI-RS
- B. DPOSCH
- C. DPDCCH
- D. DPBCH
Answer: B,C,D
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 # 24
Which of the following events is used by the gNodeB to trigger a blind redirection procedure?
- A. A4
- B. A2
- C. A1
- D. A3
Answer: D
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 # 25
Which of the following statements about the advantages of the Rayce ray tracing model are correct?(Select All that Apply)
- A. It offers higher level prediction accuracy.
- B. It offers more accurate modeling for massive MIMO.
- C. It offers more accurate path searching, reflection, and diffraction energy calculation for electromagnetic wave propagation.
- D. It is applicable only to C-band, and not mmWave.
Answer: A,C
Explanation:
Explanation
The Rayce ray tracing model is a propagation model that computes propagation paths using 3-D environment geometry 3. It is based on the shooting and bouncing rays (SBR) method, which launches rays from the transmitter and traces their reflections and diffractions until they reach the receiver or are attenuated below a threshold 4. The Rayce ray tracing model offers more accurate path searching, reflection, and diffraction energy calculation for electromagnetic wave propagation than other models, such as empirical models or deterministic models 5. It also offers higher level prediction accuracy, especially for massive MIMO systems that use beamforming techniques 6. The Rayce ray tracing model is not applicable only to C-band, but also to mmWave and other frequency bands 7.
NEW QUESTION # 26
In the uplink rate test for NR users, which of the following values is the recommended uplink maximum MIMO layers for 2T4R UEs?
- A. Layer3
- B. Layer1
- C. Layer2
- D. Layer4
Answer: C
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 # 27
Which of the following statements about the space principles for 5G BBU installation are correct?(Select All that Apply)
- A. If the remaining space of an existing cabinet is greater than 4 U, the BBU can be installed directly.
- B. If the installation space is insufficient, the BBU can be installed on a wall. Ensure that the wall meets the load bearing requirements.
- C. If the installation space is insufficient, install 5G boards directly into the existing 4G B8U.
- D. If the space is greater than 600 mm, a cabinet can be added to install the BBU.
Answer: A,B,D
Explanation:
Explanation
According to the Hardware Description: Bbu5900 V100r013c10, these statements are correct about the space principles for 5G BBU installation:
If the installation space is insufficient, the BBU can be installed on a wall. Ensure that the wall meets the load bearing requirements: The BBU can be installed on a wall using wall-mounted brackets. The wall must be able to bear at least four times the weight of the BBU and must be flat and vertical. The installation height of the BBU must not exceed 2 m.
If the space is greater than 600 mm, a cabinet can be added to install the BBU: The BBU can be installed in a cabinet that meets the requirements of Huawei base stations. The cabinet must have a width of 19 inches and a depth of at least 600 mm. The cabinet must also provide sufficient ventilation, grounding, and lightning protection for the BBU.
If the remaining space of an existing cabinet is greater than 4 U, the BBU can be installed directly: The BBU can be installed in an existing cabinet that has enough space for it. The BBU has a height of 2 U, so it requires at least 4 U of space in a cabinet. The existing cabinet must also meet the requirements of Huawei base stations.
The other statement is incorrect about the space principles for 5G BBU installation:
If the installation space is insufficient, install 5G boards directly into the existing 4G B8U: This statement is not supported by Huawei base stations. The 5G boards cannot be installed directly into the existing 4G B8U because they have different slot distributions and board types. The 5G boards can only be installed in a BBU5900 subrack that supports both LTE and NR modes.
NEW QUESTION # 28
Which of the following is not a typical application scenario of massive MIMO?
- A. Large venues
- B. Suburban areas with light traffic
- C. Densely populated urban areas
- D. High-rise buildings
Answer: B
Explanation:
Explanation
Massive MIMO is a technology that uses a large number of antennas at the base station to serve multiple users simultaneously, thereby increasing the spectral efficiency and capacity of the wireless system 1. Massive MIMO is especially suitable for application scenarios where there is high user density and high traffic demand, such as large venues, high-rise buildings, and densely populated urban areas 2. Suburban areas with light traffic do not have such high requirements for spectral efficiency and capacity, and therefore are not a typical application scenario of massive MIMO.
NEW QUESTION # 29
What are characteristics of eCPRI links?(Select All that Apply)
- A. They require AAU support.
- B. They are based on the IP mechanism.
- C. They are based on the TDM mechanism.
- D. They require dock synchronization.
Answer: A,B,D
Explanation:
Explanation
According to the eCPRI Specification V2, eCPRI links have the following characteristics:
They require clock synchronization: eCPRI links use Ethernet as the transport layer, which does not provide inherent synchronization. Therefore, eCPRI links require external clock synchronization methods, such as IEEE 1588v2 Precision Time Protocol (PTP) or Synchronous Ethernet (SyncE).
They are based on the IP mechanism: eCPRI links use IP as the network layer, which provides routing and addressing functions for eCPRI messages. eCPRI links can use either IPv4 or IPv6 protocols.
They require AAU support: eCPRI links connect between Radio Equipment Control (REC) and Radio Equipment (RE) in a base station. AAU (Active Antenna Unit) is a type of RE that integrates RF and antenna functions in one unit. Therefore, eCPRI links require AAU support to enable flexible functional split options and reduce fronthaul bandwidth requirements.
eCPRI links are not based on the TDM mechanism because they do not use fixed time slots to transmit data.
Instead, they use variable-length packets to transmit data according to different service requirements.
NEW QUESTION # 30
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. They support LTE-NR dual-mode on some frequency bands.
- C. 64T64R AAUs provide higher coverage gains than 32T32R AAUs.
- D. AAUs have an operating voltage of -48 V DC.
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 # 31
Which of the following are the cause values of QoS flow setup failures?(Select All that Apply)
- A. Insufficient transmission resources
- B. Insufficient radio resources
- C. Unauthorized UE
- D. No response from the UE
Answer: B,D
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, no response from the UE, insufficient radio resources, and unauthorized UE are cause values of QoS flow setup failures, which correspond to options A, B, and D.
Insufficient transmission resources is not a cause value of QoS flow setup failures, but a cause value of handover execution failures, which corresponds to option C.
NEW QUESTION # 32
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. Shadow fading margin
- B. Antenna gain
- C. Area coverage rate
- D. Penetration loss
Answer: A,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 # 33
Which of the following channels is used to send uplink power control commands?
- A. PUSCH
- B. POSCH
- C. PUCCH
- D. PDCCH
Answer: D
Explanation:
Explanation
According to the Uplink Power Control, PDCCH is the channel that is used to send uplink power control commands, also known as TPC commands. These commands indicate how much power should be increased or decreased by the UE for PUSCH or PUCCH transmissions.
NEW QUESTION # 34
In SA networking, which of the following messages is used to deliver PRACH power control parameters to UEs?
- A. MIB
- B. SIB1
- C. SIB2
- D. RRC reconfiguration
Answer: C
Explanation:
Explanation
According to the 5G NR Uplink Power Control Procedure, SIB2 is the message that contains the PRACH power control parameters, such as msg3-Alpha, p0-NominalWithoutGrant, and p0-AlphaSets. These parameters are used by the UE to determine the transmit power of the PRACH preamble.
NEW QUESTION # 35
In the NSA DC architecture, which of the following procedures is triggered when a UE moves to a neighboring gNodeB?
- A. SgNB change procedure
- B. MeNB change procedure
- C. MeNB release procedure
- D. SgNB release procedure
Answer: A
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 # 36
Which of the following materials does not need to be prepared before site survey?
- A. Engineering file
- B. 5G antenna height table
- C. Site survey table
- D. Local map
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 # 37
In the MR-DC architecture, which of the following factors affect the data split on a base station?(Select All that Apply)
- A. RLC layer buffer
- B. X2 latency
- C. PDCP layer buffer
- D. Air interface latency
Answer: B,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 # 38
In an intra-frequency reselection procedure, which message contains the rangeToBestCell parameter?
- A. SIB4
- B. SIB1
- C. SIB3
- D. SIB2
Answer: D
Explanation:
Explanation
According to the 38.331 RRC, SIB2 is the message that contains the rangeToBestCell parameter, which is used for intra-frequency cell reselection. The rangeToBestCell parameter defines a threshold for cell ranking based on RSRP (Reference Signal Received Power). A UE may only reselect to a cell if its RSRP exceeds that of the serving cell by at least rangeToBestCell dB.
NEW QUESTION # 39
Which of the following statements about link budget parameters is incorrect?
- A. The antenna gain of the 64T64R A All is approximately 24 dBi.
- B. The higher the edge service rate, the lower the required SINR demodulation threshold.
- C. The shadow fading margin is related to the edge coverage rate.
- D. The interference margin is relatively small on high frequency bands.
Answer: B
Explanation:
Explanation
A link budget is an accounting of all the power gains and losses that a communication signal experiences in a telecommunication system 8. A link budget can be used to determine the received signal-to-interference-plus-noise ratio (SINR), which is a measure of the quality of the signal at the receiver.
The SINR demodulation threshold is the minimum SINR required to demodulate the signal successfully. The SINR demodulation threshold depends on the modulation and coding scheme (MCS) used by the transmitter, which in turn depends on the service rate or data rate required by the application 9. Generally, the higher the service rate, the higher the MCS level, and therefore the higher the SINR demodulation threshold. Thus, statement A is incorrect. The other statements are correct. The interference margin is relatively small on high frequency bands because there are fewer co-channel interferers due to smaller cell sizes 10. The shadow fading margin is related to the edge coverage rate because it accounts for the variation of signal strength due to obstacles in the propagation path 11. The antenna gain of the 64T64R AAU is approximately 24 dBi according to Huawei's product specifications 12.
NEW QUESTION # 40
In order to achieve ideal coverage, what is the clearance requirement around an antenna?
- A. 1-5m
- B. 50-100m
- C. 5000-10000m
- D. 5-10m
Answer: D
Explanation:
Explanation
In order to achieve ideal coverage, there should be a clearance zone around an antenna of at least d, where d is the Fraunhofer or Rayleigh distance at which the near/far-field transition zone exists 17. This distance depends on the largest dimension of the antenna, D, and the operating wavelength, \uF06C. Ideally, D should be at least a half of a wavelength, which gives a minimum clearance zone of a half-wavelength. For example, at 2.4 GHz, the wavelength is about 0.125 m, so the minimum clearance zone is about 0.0625 m. However, in practical situations, this clearance zone is often compromised and the effects must be determined through simulation or empirical measurement 18. A general guideline is to have a clearance zone of 5-10 m around an antenna to avoid significant degradation of performance 19. Therefore, the best answer is C.
NEW QUESTION # 41
In which of the following areas is overlapping coverage unlikely to occur?
- A. Inside a tunnel
- B. Around areas with water
- C. High-rise buildings
- D. Crossroads in dense urban areas
Answer: B
Explanation:
Explanation
According to the HCIA-5G - Huawei Enterprise Support Community, overlapping coverage is likely to occur in areas such as inside a tunnel, crossroads in dense urban areas, and high-rise buildings, which correspond to options A, B, and C. These areas have complex propagation environments and multiple paths for signals to reach the UE. Around areas with water, overlapping coverage is unlikely to occur because water can reflect signals and reduce interference from other cells, which corresponds to option D.
NEW QUESTION # 42
Which of the following spectrum sharing technologies can be used in the 3.5 GHz+2.1 GHz uplink and downlink decoupling/super uplink architecture?
- A. 3.5 GHz NR and 2.1 GHz LTE only share the uplink spectrums.
- B. 2.1 GHz NR and 2.1 GHz LTE only share the uplink spectrums.
- C. 2.1 GHz NR and 2.1 GHz LTE share both the downlink and uplink spectrums.
- D. 3.5 GHz NR and 2.1 GHz LTE share both the downlink and uplink spectrums.
Answer: A
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, the 3.5 GHz+2.1 GHz uplink and downlink decoupling/super uplink architecture uses spectrum sharing technologies such as Dynamic Spectrum Sharing (DSS) and Spectrum Sharing (SS) to enable 3.5 GHz NR and 2.1 GHz LTE to share only the uplink spectrums, while the downlink spectrums are used exclusively by each technology.
NEW QUESTION # 43
What is the maximum bandwidth in mmWave bands as defined in 3GPP Release 16?
- A. 20MHz
- B. 400MHz
- C. 100MHz
- D. 60MHz
Answer: B
Explanation:
Explanation
According to the 5G mmWave Frequency Bands, the maximum bandwidth in mmWave bands as defined in
3GPP Release 16 is 400MHz, which can be achieved without any carrier aggregation method.
NEW QUESTION # 44
Under the same gNodeB, an NR TDD cell supports the same maximum number of RRC_CONNECTED UEs as an NR FDD cell.
- A. False
- B. True
Answer: A
Explanation:
Explanation
According to the Radio Resource Control, the maximum number of RRC_CONNECTED UEs depends on the number of available C-RNTIs (Cell Radio Network Temporary Identifiers) in a cell. The number of C-RNTIs is limited by the size of the RNTI field in the DCI (Downlink Control Information) format. For NR TDD cells, the RNTI field size is 16 bits, which allows up to 65,536 C-RNTIs. For NR FDD cells, the RNTI field size is
14 bits, which allows up to 16,384 C-RNTIs. Therefore, an NR TDD cell can support more RRC_CONNECTED UEs than an NR FDD cell under the same gNodeB.
NEW QUESTION # 45
In downlink peak rate testing, the modulation and coding scheme (MCS) index must reach 32.
- A. True
- B. False
Answer: A
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, in downlink peak rate testing, the modulation and coding scheme (MCS) index must reach 32, which corresponds to option A.
NEW QUESTION # 46
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Huawei H35-580_V2.0 (HCIA-5G-RNP&RNO V2.0) Certification Exam is an essential certification for professionals who are involved in the development and deployment of 5G networks. H35-580_V2.0 exam validates the candidates' knowledge and skills in several areas related to 5G network development and deployment, and it is recognized globally by Huawei and the telecommunications industry.
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