[Dec 13, 2023] Get New H35-580_V2.0 Practice Test Questions Answers
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NEW QUESTION # 20
Which of the following is not covered by a site survey?
- A. Site location
- B. Antenna installation space
- C. Equipment room space and load bearing capacity
- D. Models of hardware boards on base stations
Answer: D
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 # 21
What is the maximum bandwidth in mmWave bands as defined in 3GPP Release 16?
- A. 20MHz
- B. 60MHz
- C. 100MHz
- D. 400MHz
Answer: D
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 # 22
Which of the following NR system indicators is at the base station level?
- A. User capacity usage
- B. PDCCH resource usage
- C. PRB usage
- D. Paging 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 # 23
In which of the following areas is overlapping coverage unlikely to occur?
- A. Around areas with water
- B. High-rise buildings
- C. Inside a tunnel
- D. Crossroads in dense urban areas
Answer: A
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 # 24
Which of the following protocols/data belong to Layer 3 of the Uu interface?(Select All that Apply)
- A. MAC protocol
- B. RRC protocol
- C. IP data
- D. RLC protocol
Answer: B
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 # 25
Which of the following is not the cause of cell unavailability due to system faults (specified using
N.Cell.Unavail.Dur.System)?
- A. CPRI link faults
- B. Faults on an RF module's TX or RX channels
- C. Board faults
- D. Blocking cells by using MML commands
Answer: D
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 # 26
After gNodeB hardware is installed and commissioned, which of the following functions needs to be tested and verified in single site verification?
- A. Call drop capability
- B. Equipment functions and coverage capability
- C. SON capability
- D. Interoperability capability
Answer: B
Explanation:
Explanation
According to the Career Certification - Huawei Enterprise, single site verification is used to test and verify the equipment functions and coverage capability after gNodeB hardware is installed and commissioned, which corresponds to option C.
NEW QUESTION # 27
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 # 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. IPRAN interconnection between subracks
- B. Interconnection via backplane in a subrack
- C. Interconnection through HEI interfaces on the UBBP boards in different subracks
- D. Interconnection through CI interfaces on the UMPT boards in different subracks
Answer: A,D
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
Which of the following materials does not need to be prepared before site survey?
- A. Site survey table
- B. 5G antenna height table
- C. Engineering file
- D. Local map
Answer: C
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 # 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. 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 # 31
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 # 32
Which of the following statistics are provided by the Probe's BLER statistics menu?(Select All that Apply)
- A. DIBLER
- B. Retransmission ratio
- C. Modulation scheme
- D. DRBLER
Answer: A,B,D
Explanation:
Explanation
According to the Probe User Guide (V100R019C10_01) (PDF)-EN, the Probe's BLER statistics menu provides the following statistics:
DIBLER: Downlink Initial Block Error Rate, which is the ratio of the number of erroneous downlink transport blocks to the total number of downlink transport blocks received by the UE in the first transmission.
DRBLER: Downlink Residual Block Error Rate, which is the ratio of the number of erroneous downlink transport blocks to the total number of downlink transport blocks received by the UE after all retransmissions.
Retransmission ratio: The ratio of the number of retransmitted downlink transport blocks to the total number of downlink transport blocks received by the UE.
The Probe's BLER statistics menu does not provide the modulation scheme as a statistic. The modulation scheme is a parameter that determines the modulation and coding scheme (MCS) used for data transmission on the physical downlink shared channel (PDSCH). The modulation scheme can be QPSK, 16QAM, 64QAM, or
256QAM. The modulation scheme can be displayed on the Probe's PDSCH configuration menu or PDSCH demodulation menu.
Therefore, the correct answer is A, B, and D.
NEW QUESTION # 33
Which of the following is not a function of the 5G RRC layer?
- A. Handover and mobility
- B. Access control
- C. Radio resource management
- 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 # 34
In the MR-DC architecture, which of the following factors affect the data split on a base station?(Select All that Apply)
- A. X2 latency
- B. PDCP layer buffer
- C. RLC layer buffer
- D. Air interface latency
Answer: A,B,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 # 35
Which of the following statements about downlink beamforming are correct?(Select All that Apply)
- A. Static beams are used for broadcast channels.
- B. Dynamic beams are used for traffic channels.
- C. Only the PDSCH supports beamforming.
- D. Both broadcast channels and traffic channels support beamforming.
Answer: A,B,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 # 36
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 # 37
Which of the following boards support CPU usage query?(Select All that Apply)
- A. UBBP
- B. UMPT
- C. FAN
- D. UPEU
Answer: A,B,D
Explanation:
Explanation
According to the Huawei 5G Base Station Product Description, the following boards support CPU usage query:
UPEU (Universal Power and Environment Interface Unit): It provides power supply and environment monitoring functions for other boards in a subrack. It supports CPU usage query through commands or web pages.
UMPT (Universal Main Processing and Transmission Unit): It provides main processing and transmission functions for a subrack. It supports CPU usage query through commands or web pages.
UBBP (Universal Baseband Processing Unit): It provides baseband processing functions for a subrack.
It supports CPU usage query through commands or web pages.
The FAN (Fan Unit) does not support CPU usage query because it does not have a CPU.
NEW QUESTION # 38
What are characteristics of eCPRI links?(Select All that Apply)
- A. They are based on the TDM mechanism.
- B. They are based on the IP mechanism.
- C. They require AAU support.
- D. They require dock synchronization.
Answer: B,C,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 # 39
If AFGIobal is 15 kHz, FREF-Offs is 3000 MHz, and NREF-Offs is 600000, which of the following is the NR Absolute Radio Frequency Channel Number (NR-ARFCN) corresponding to 3300 MHz?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Explanation
According to the NR-ARFCN (NR absolute radio frequency channel number), the NR-ARFCN value consists of two components: the band indicator and the channel number. The band indicator represents the frequency band on which the carrier frequency lies, while the channel number represents the specific carrier frequency within that band. The NR-ARFCN value is calculated by the following formula:
NR-ARFCN = FREF-Offs + NREF-Offs + FGlobal * (Fcarrier - FREF-Offs) / AFGIobal where FREF-Offs is the reference frequency offset, NREF-Offs is the reference NR-ARFCN offset, FGlobal is the global frequency raster, Fcarrier is the carrier frequency, and AFGIobal is the absolute frequency granularity.
Given that AFGIobal is 15 kHz, FREF-Offs is 3000 MHz, and NREF-Offs is 600000, we can plug in these values and Fcarrier = 3300 MHz into the formula and get:
NR-ARFCN = 3000 + 600000 + 5 * (3300 - 3000) / 0.015 NR-ARFCN = 633000
Therefore, the correct answer is A.
NEW QUESTION # 40
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Huawei H35-580_V2.0 is an advanced certification program that focuses on the latest 5G Radio Access Network Planning (RNP) technology. It is designed for network engineers, planners, and administrators who want to learn about the latest RNP technology in 5G networks. HCIA-5G-RNP&RNO V2.0 certification not only validates the knowledge of professionals but also provides them with the practical skills to design and implement 5G RNP solutions efficiently.
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