H35-580_V2.0 Exam Dumps Pass with Updated 2024 Certified Exam Questions
H35-580_V2.0 Exam Questions - Real & Updated Questions PDF
NEW QUESTION # 19
The UPEU in the BBU5900 needs to be connected to two circuit breakers.
- A. False
- B. True
Answer: A
Explanation:
Explanation
According to the BBU Quick Installation Guide (V100R005C10_04) (PDF)-EN, the UPEU in the BBU5900 needs to be connected to only one circuit breaker, not two. The UPEU is a universal power and environment interface unit that provides power supply and environment monitoring functions for other boards in a subrack.
The UPEU converts -48 V DC to +12 V DC and distributes the power to other boards. The UPEU also collects alarms from the subrack and reports them to the main processing board. The UPEU can be installed in slot 0 or slot 10 of the BBU5900 subrack. The UPEU needs to be connected to a -48 V DC power cable that is connected to a circuit breaker in the cabinet. The circuit breaker must have a rated current of 16 A or higher.
Therefore, the correct answer is B.
NEW QUESTION # 20
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. 64T64R AAUs provide higher coverage gains than 32T32R AAUs.
- D. They support LTE-NR dual-mode on some frequency bands.
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 # 21
Which of the following statements about downlink beamforming are correct?(Select All that Apply)
- A. Only the PDSCH supports beamforming.
- B. Static beams are used for broadcast channels.
- C. Both broadcast channels and traffic channels support beamforming.
- D. Dynamic beams are used for traffic channels.
Answer: B,C,D
Explanation:
Explanation
According to the Beamforming techniques for massive MIMO systems in 5G, these statements are correct about downlink beamforming. Beamforming is a technique that uses multiple antennas to steer the transmitted signal toward the intended user or direction. Static beams are used for broadcast channels, such as MIB and SIB, which are transmitted to all UEs in a cell. Dynamic beams are used for traffic channels, such as PDSCH and PDCCH, which are transmitted to specific UEs based on their channel conditions and locations. Both broadcast channels and traffic channels support beamforming, but with different beamforming methods and performance requirements.
NEW QUESTION # 22
Which of the following is not covered by a site survey?
- A. Models of hardware boards on base stations
- B. Equipment room space and load bearing capacity
- C. Site location
- D. Antenna installation space
Answer: A
Explanation:
Explanation
A site survey is an inspection of an area where work is proposed, to gather information for a design or an estimate to complete the initial tasks required for an outdoor activity 1. A site survey can cover various aspects, such as antenna installation space, equipment room space and load bearing capacity, site location, and other environmental factors 2. However, a site survey does not cover the models of hardware boards on base stations, as this information is not related to the physical characteristics of the site. The models of hardware boards on base stations are determined by the network design and configuration, which are based on the network requirements and specifications 3. Therefore, the correct answer is C.
NEW QUESTION # 23
Which of the following is not a function of the 5G RRC layer?
- A. Access control
- B. Radio resource management
- C. Handover and mobility
- D. Encryption, decryption, and integrity protection
Answer: D
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, encryption, decryption, and integrity protection are functions of the PDCP layer, not the RRC layer. The RRC layer is responsible for radio resource management, access control, handover and mobility, among other functions.
NEW QUESTION # 24
Which of the following channels/signals is used by the UE to measure and obtain the CQI?
- A. CSI-RS
- B. OSSB
- C. PDSCH
- D. PDCCH
Answer: A
Explanation:
Explanation
According to the 5G NR Downlink CSI Reporting, CSI-RS is the channel/signal that is used by the UE to measure and obtain the CQI. CSI-RS stands for Channel State Information Reference Signal, which is a downlink reference signal transmitted by the gNodeB to enable the UE to estimate the channel quality and feedback the CQI to the gNodeB. The CQI is an indicator of how good or bad the channel quality is, and it can be used by the gNodeB to adjust the modulation and coding scheme for data transmission.
NEW QUESTION # 25
Which of the following common messages need to be scheduled?(Select All that Apply)
- A. MIB
- B. Paging
- C. SIB
- D. RA Response
Answer: A,B,C
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 # 26
In the NSA DC architecture, which of the following procedures is triggered when a UE moves to a neighboring gNodeB?
- A. MeNB release procedure
- B. SgNB release procedure
- C. SgNB change procedure
- D. MeNB change 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 # 27
Which of the following protocols/data belong to Layer 3 of the Uu interface?(Select All that Apply)
- A. RRC protocol
- B. RLC protocol
- C. IP data
- D. MAC protocol
Answer: A
Explanation:
Explanation
According to the LTE user plane protocol stack, the Layer 3 of the Uu interface consists of the RRC protocol and the IP data. The RRC protocol is responsible for radio resource management, access control, handover and mobility, and encryption and integrity protection. The IP data is the payload of the user plane that is transmitted over the PDCP layer.
NEW QUESTION # 28
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 through CI interfaces on the UMPT boards in different subracks
- B. Interconnection via backplane in a subrack
- C. IPRAN interconnection between subracks
- D. Interconnection through HEI interfaces on the UBBP boards in different subracks
Answer: A,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 # 29
CU-DU Split of a base station means that the base station's control plane functions and user plane functions are separated.
- A. False
- B. True
Answer: B
Explanation:
Explanation
According to the China's Approach to Military 5G Networks and Related Military Applications, CU-DU Split of a base station means that the base station's control plane functions (CU) and user plane functions (DU) are separated, which can improve network flexibility and scalability.
NEW QUESTION # 30
Which of the following channels is used to send uplink power control commands?
- A. POSCH
- B. PUSCH
- 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 # 31
Which of the following counters can be measured at the board level?
- A. Number of paging messages
- B. CCE usage
- C. Transmission interface measurement
- D. CPU usage
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 # 32
What is the maximum bandwidth in mmWave bands as defined in 3GPP Release 16?
- A. 100MHz
- B. 60MHz
- C. 400MHz
- D. 20MHz
Answer: C
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 # 33
Which of the following statements about throughput-related indicators are correct?(Select All that Apply)
- A. The actual cell throughput can be obtained by dividing the total data transmission throughput within a measurement period by the time when data is transmitted in the cell.
- B. Throughput is more accurate if the last small packet of each data transmission burst and its transmission duration are added.
- C. The average throughput of a single UE is obtained by dividing the data volume transmitted or received by the UE by the actual data transmission time.
- D. The uplink/downlink average UE throughput is used to evaluate the user-perceived rate.
Answer: A,C,D
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, the statements in options A, B, and C are correct descriptions of throughput-related indicators, which correspond to options A, B, and C. The statement in option D is incorrect because adding the last small packet of each data transmission burst and its transmission duration will reduce the accuracy of throughput measurement.
NEW QUESTION # 34
Which of the following NR system indicators is at the base station level?
- A. User capacity usage
- B. Paging resource usage
- C. PRB usage
- D. PDCCH resource usage
Answer: A
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, user capacity usage is an NR system indicator that is at the base station level, which corresponds to option C. It reflects the number of users that can be served by a base station. PRB usage, PDCCH resource usage, and paging resource usage are NR system indicators that are at the cell level, which correspond to options A, B, and D. They reflect the utilization of physical resources in a cell.
NEW QUESTION # 35
In the cell search process in 5G SA, a UE completes frame synchronization after reading the SS.
- A. False
- B. True
Answer: A
Explanation:
Explanation
According to the 5G SA Cell Search & Network Entry Matrix, a UE completes frame synchronization after reading the MIB, not the SS. The SS (Synchronization Signal) is used for initial detection and coarse timing synchronization, but it does not provide enough information for frame synchronization. The MIB (Master Information Block) is part of the SSB (Synchronization Signal Block) and contains essential system information, such as system frame number and subcarrier spacing, which are needed for frame synchronization.
NEW QUESTION # 36
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. 3.5 GHz NR and 2.1 GHz LTE share both the downlink and uplink spectrums.
- C. 2.1 GHz NR and 2.1 GHz LTE share both the downlink and uplink spectrums.
- D. 2.1 GHz NR and 2.1 GHz LTE only share the 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 # 37
Which of the following materials does not need to be prepared before site survey?
- A. Local map
- B. Site survey table
- C. 5G antenna height table
- D. Engineering file
Answer: D
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 # 38
The PCFICH and PHICH channels have been deleted from the physical layer in 5G compared with LTE.
- A. False
- B. True
Answer: B
Explanation:
Explanation
According to the 5G NR Protocol Structure Changes - An Overview, the PCFICH and PHICH channels have been deleted from the physical layer in 5G compared with LTE, because they are no longer needed due to the flexible frame structure and numerology of 5G NR.
NEW QUESTION # 39
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. Area coverage rate
- C. Penetration loss
- D. Antenna gain
Answer: A,B,C
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 # 40
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