H35-580_V2.0 HCIA-5G-RNP&RNO V2.0 Questions and Answers

According to the  HCIA-5G V2.0 Exam Outline , handover execution failures can use the counters to collect failure reasons in SA networking, which corresponds to option A. The counters include N.HO.Exec.Fail.RadioResFail, N.HO.Exec.Fail.TAExceed, N.HO.Exec.Fail.NoRespFromUE, and N.HO.Exec.Fail.Other.

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.

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.

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.

 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.

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.

 According to the  Career Certification - Huawei Enterprise , DUB8P, DUPEU, and DUMPT are boards in a base station that support CPU usage measurement, which correspond to options B, C, and D. DFAN is a fan board that does not support CPU usage measurement, which corresponds to option A.

According to the  Troubleshooting Guide for Huawei 5G Base Stations , the possible causes of SCTP link disconnection over the N2 interface are as follows:

Routes are not configured: If the routes between the base station and the core network are not configured correctly, the SCTP link cannot be established or may be disconnected.

PLMN configurations are incorrect: If the PLMN configurations on the base station and the core network do not match, the SCTP link cannot be established or may be disconnected.

Physical ports are faulty: If the physical ports on the base station or the core network are faulty, such as damaged cables, loose connectors, or port errors, the SCTP link cannot be established or may be disconnected.

The SCTP port configuration is incorrect: If the SCTP port configuration on the base station or the core network is incorrect, such as using a reserved port number or a conflicting port number, the SCTP link cannot be established or may be disconnected.

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.

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 .

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.

 According to the  LTE-NR tight-interworking and the first steps to 5G , in a Huawei base station, QCI2 can only be configured as an MCG (Master Cell Group) bearer. QCI2 is a voice bearer that requires low latency and high reliability. Therefore, it cannot be configured as an SCG (Secondary Cell Group) bearer or a split bearer that may introduce additional delay or packet loss. QCI6, QCI9, and QQ1 can be configured as either MCG bearers, SCG bearers, or split bearers depending on the service requirements and network conditions.

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.

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.

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.