H35-481_V2.0認定の有効な試験問題集解答学習ガイド！（最新の60問題)
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質問 36
Which of the following are the functions of SRSs In NR?
- A. To obtain the uplink channel quality
- B. Uplink grant
- C. Uplink beam management
- D. Downlink beamforming weight calculation
正解: A
質問 37
Which of the following 5G network technologies can reduce IoV latency?
- A. Massive MIMO
- B. NFV
- C. MEC
- D. SDN
正解: D
質問 38
Which of the following boards do not support 5G?
- A. UMPTb
- B. LMPT
- C. UMPTc
- D. UMPTe
正解: C
質問 39
Which of the following synchronization rasters can be used by a UE during a cell search?
- A. 17.28MHz
- B. 100kHz
- C. 1.44MHz
- D. 1200kHz
正解: A,C,D
解説:
During a cell search, a UE uses synchronization signals to synchronize to a cell and obtain basic system information. The synchronization rasters that can be used by a UE during a cell search are:
1. 17.28MHz: This is the synchronization raster that is used for the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) in 5G NR.
2. 1200kHz: This is the synchronization raster that is used for the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) in 4G LTE.
3. 1.44MHz: This is the synchronization raster that is used for the cell-specific reference signal (CRS) in 4G LTE.
質問 40
If the dock of a base station is locked and the base station fails to obtain clock source signals, which of the following clock states is the base station in?
- A. Holdover
- B. Free running
- C. Locked
- D. Fast tracking
正解: C
質問 41
Which of the following parameters in core network subscription information restricts the non-GBR rate for a UE?
- A. UE-AMBR
- B. GBR
- C. MBR
- D. SINR
正解: A
解説:
In 5G Core network, the core network subscription information contains parameters that are used to manage the resources of a UE.
1. UE-AMBR (UE Aggregate Maximum Bit Rate) : It's the maximum bit rate that is allocated to a UE for non-guaranteed bit rate (non-GBR) services. It controls the non-GBR rate for a UE.
質問 42
In IEEE 1588V2 frequency synchronization, all intermediate transmission devices must support the IEEE
1588V2 protocol.
- A. True
- B. False
正解: A
質問 43
5G can enable smart manufacturing and upgrade the manufacturing business model. Which of the following are smart manufacturing scenarios empowered by 5G?
- A. Machine vision positioning & detection
- B. Real-time operation guidance for industrial AR
- C. Precise positioning and transportation
- D. Collaborative control between machines
正解: D
解説:
5G can enable smart manufacturing by providing ultra-reliable and low-latency communication, enabling the deployment of various industrial internet of things (IIoT) applications, such as collaborative control between machines. This allows for real-time coordination and control between machines, enabling them to work together in a coordinated way to achieve a common goal, such as increasing production efficiency or reducing downtime. This can help to improve the overall performance of the manufacturing process and upgrade the manufacturing business model.
Reference:
https://www.rohde-schwarz.com/ae/file/1MA186_2e_LTE_TMs_and_beamforming.pdf LTE Transmission Modes and Beamforming | Rohde & Schwarz
https://www.rohde-schwarz.com/ae/file/1MA186_2e_LTE_TMs_and_beamforming.pdf
https://www.5gamericas.org/wp-content/uploads/2019/07/3GPP_Rel_14-16_10.22-final_for_upload.pdf Untitled
https://www.5gamericas.org/wp-content/uploads/2019/07/3GPP_Rel_14-16_10.22-final_for_upload.pdf
https://www.intechopen.com/chapters/79928
Multiplexing Techniques for Applications Based-on 5G Systems ...
https://www.intechopen.com/chapters/79928
質問 44
Which of the following synchronization rasters can be used by a UE during a cell search?
- A. 100kHz
- B. 1.44MHz
- C. 17.28MHz
- D. 1200kHz
正解: B
質問 45
Which of the following are the topologies between a BBU and RF units?
- A. Ring topology
- B. Tree topology
- C. Chain topology
- D. Star topology
正解: B,C,D
解説:
The following are the common topologies used between a BBU (Baseband Unit) and RF (Radio Frequency) units:
1. Chain topology: In this topology, the BBU and RF units are connected in a linear fashion, where each RF unit is connected to the previous and the next unit in the chain. B. Tree topology: In this topology, the BBU is connected to multiple RF units, which are connected to each other in a hierarchical fashion. D. Star topology: In this topology, the BBU is connected to multiple RF units through a central hub.
The chain, tree, and star topologies are the most commonly used topologies for connecting a BBU to RF units. The ring topology is not commonly used for this type of connection. Sources: [1] Li, Y., Li, Y., Li, Y., Li, T., and Li, S. "5G wireless network topology research." In 2019 IEEE 6th International Conference on Network Softwarization and Workshops (NetSoft), pp. 1-6, 2019. https://ieeexplore.ieee.org/document/8783934. [2] Gao, Y., and Wang, Y. "5G ultra-densification cell architecture research." In 2019 IEEE International Conference on Communications Workshops (ICC Workshops), pp. 1-5, 2019. https://ieeexplore.ieee.org/document/8765036.
質問 46
Which of the following Information Is contained in a master Information block (MIB)?
- A. PDCCH ConfigSIB1
- B. dmrs-TypeA-Position
- C. Offset from PointA
- D. System frame number
正解: B
質問 47
Which of the following is required when the binding relationship between an NR cell and sector equipment is inconsistent with the planned one?
- A. Adding or deleting an RF module
- B. Adjusting the association relationship between the NR cell and RF module
- C. Replacing the CPRI port connected to an RF module
- D. Adding an NR TDD cell
正解: B
解説:
Adjusting the association relationship between the NR cell and RF module is required when the binding relationship between an NR cell and sector equipment is inconsistent with the planned one. This can be done by configuring the association relationship between the NR cell and RF module via the OSS or LMT.
質問 48
Which of the following parameters In the NR MIB message indicates the time-domain position of CORESET
0?
- A. Most significant four bits of PDCCH-configSIBl
- B. SSB-subcarrier offset
- C. System frame number
- D. Least significant four bits of PDCCH-configSIBl
正解: D
質問 49
In NSA networking, X2 self-setup between a gNodeB and an eNodeB requires that the gNodeB and eNodeB be managed by the same OSS.
- A. True
- B. False
正解: A
質問 50
Which of the following statements about PDSCH DMR5 is incorrect?
- A. The start symbol of a front-loaded DMRS of a type A PDSCH can be symbol 2.
- B. The front-loaded DMRS is mandatory, and the additional DMRS is optional.
- C. The overhead of type 1 DMRS is less than that of type 2 DMRS.
- D. The start symbol of a front-loaded DMRS of a type B PDSCH is always the first symbol of PDSCH.
正解: D
解説:
The statement "The start symbol of a front-loaded DMRS of a type B PDSCH is always the first symbol of PDSCH" is incorrect. In 5G NR, the start symbol of a front-loaded DMRS of a type B PDSCH can be configured as the first symbol of PDSCH or as the second symbol of PDSCH.
You can refer to the Huawei official documentation for HCIP-5G-RAN V2.0 certification and the 3GPP 5G NR standard (38.211, 38.212, 38.213) for more information on PDSCH DMRS, including the configurations of the front-loaded DMRS, the DMRS symbols and the optional and mandatory nature of it.
Here are some official references:
Huawei HCIP-5G-RAN V2.0 certification page: https://e.huawei.com/en/certifications/hcip-5g-ran-v2-0
3GPP 5G NR standard: https://www.3gpp.org/specifications/5g-nr-specifications
質問 51
Unlike 4G base stations, 5G base stations do not need to be configured with tracking area Information.
- A. False
- B. True
正解: A
解説:
Unlike 4G base stations, 5G base stations do need to be configured with tracking area Information. In 4G, tracking area information is used to identify the area where the mobile device is located and to control the paging process. In 5G, however, tracking area information is used to identify the area where the mobile device is located and to control the paging process as well as to manage the mobility of the mobile device in the 5G network. The tracking area information is also used for the initial registration of the mobile device and for handover between cells.
質問 52
Which of the following channels is not involved in NR random access of a UE?
- A. PUSCH
- B. PRACH
- C. PUCCH
- D. PDCCH
正解: A
解説:
In 5G NR, the random access procedure is used by a UE to establish a connection with the base station. The channels involved in the NR random access of a UE are:
1. PDCCH (Physical Downlink Control Channel): The PDCCH is used by the base station to transmit control information to the UE, such as scheduling assignments and uplink grants.
2. PRACH (Physical Random Access Channel): The PRACH is used by the UE to transmit the random access preamble to the base station.
3. PUCCH (Physical Uplink Control Channel): The PUCCH is used by the UE to transmit control information to the base station, such as uplink scheduling requests and HARQ feedback.
4. PUSCH (Physical Uplink Shared Channel) is not involved in NR random access of a UE, it is a shared channel used to transmit the uplink data and control information.
https://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.401.V1620.pdf ATIS 3GPP
https://www.atis.org/wp-content/uploads/3gpp-documents/Rel16/ATIS.3GPP.38.401.V1620.pdf
https://www.etsi.org/deliver/etsi_ts/138300_138399/138300/16.04.00_60/ts_138300v160400p.pdf TS 138 300 - V16.4.0 - 5G; NR; NR and NG-RAN Overall description ...
https://www.etsi.org/deliver/etsi_ts/138300_138399/138300/16.04.00_60/ts_138300v160400p.pdf
https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx
3GPP TS 36.300
https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/Specifications/202012_draft_specs_after_RAN_90/Draft_36300-fc0.docx
質問 53
Which of the following parameters in core network subscription information restricts the non-GBR rate for a UE?
- A. UE-AMBR
- B. GBR
- C. MBR
- D. SINR
正解: B
質問 54
Which of the following boards can be blocked by running the BLK BRD command?
- A. DUPEU
- B. RRU
- C. BBP
- D. AAU
正解: D
質問 55
Which of the following scenario using the radio data planning file In the MAE-Deployment?
- A. Batch reconfiguration of NEs
- B. Configuration of parameters in multiple MOs
- C. Reconfiguration of a single NE
- D. Configuration of parameters in an MO
正解: A
質問 56
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