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The HCIA-5G-RNP&RNO V2.0 exam is a comprehensive test that covers a wide range of topics related to 5G networks, including 5G wireless network planning and optimization, 5G network architecture, 5G network security, and 5G network troubleshooting. H35-580_V2.0 exam also covers advanced topics such as 5G network slicing, network functions virtualization (NFV), and software-defined networking (SDN).
NEW QUESTION # 25
Which of the following statements about downlink beamforming are correct?(Select All that Apply)
- A. Both broadcast channels and traffic channels support beamforming.
- B. Only the PDSCH supports beamforming.
- C. Dynamic beams are used for traffic channels.
- D. Static beams are used for broadcast channels.
Answer: A,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 # 26
Which of the following AAUs support vertical beamforming?(Select All that Apply)
- A. 32T32R
- B. 4T4R
- C. 64T64R
- D. 8T8R
Answer: A,C
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 # 27
Which of the following SI messages must be read on a 5G network?
- A. SIB3
- B. SIB2
- C. SIB1
- D. SIB4
Answer: C
Explanation:
Explanation
According to the 5G SIB Messages, SIB1 is the only mandatory SI message that must be read on a 5G network. SIB1 contains essential information for accessing the network, such as cell identity, cell barring, and scheduling information for other SI messages. SIB2, SIB3, and SIB4 are optional SI messages that provide additional information such as radio resource configuration, intra-frequency cell reselection, and neighboring cell information.
NEW QUESTION # 28
On a 5G network, the NAS layer uses 5G-GUTI to replace IMSI as the temporary ID of a UE for security reasons.
- A. False
- B. True
Answer: B
Explanation:
Explanation
According to the 5G-GUTI - 5G Globally Unique Temporary Identity, the NAS layer uses 5G-GUTI to replace IMSI as the temporary ID of a UE for security reasons. The 5G-GUTI is allocated by the AMF (Core Access and Mobility Management Function) at the time of network registration, and it is composed of the GUAMI (Globally Unique AMF ID) and the 5G-TMSI (5G Temporary Mobile Subscriber Identity).
NEW QUESTION # 29
In SA networking, which of the following is the first step for a UE to perform a cell search?
- A. Synchronize half-frames and obtain the ID within a PCI group.
- B. Obtain the cell signal quality.
- C. Synchronize frames and obtain PCI group number.
- D. Obtain other cell information.
Answer: C
Explanation:
Explanation
According to the 5G SA Cell Search & Network Entry Matrix, the first step for a UE to perform a cell search in SA networking is to synchronize frames and obtain PCI group number. This step involves the following sub-steps:
The UE scans the available frequency range to detect the presence of Synchronization Signal Blocks (SSBs) from different base stations. SSBs are periodic signals that contain essential synchronization and system information for cell search and initial access.
The UE selects an SSB with the strongest signal strength and decodes its Primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS). The PSS and SSS are part of the SSB and provide coarse timing synchronization and cell identity information.
The UE uses the PSS and SSS information to synchronize its internal clock with that of the base station and obtain the Physical Cell Identity (PCI) group number. The PCI group number is a 9-bit value that identifies a group of 8 cells that share the same PSS and SSS sequences. The PCI group number ranges from 0 to 1007.
The other steps for a UE to perform a cell search in SA networking are:
Synchronize half-frames and obtain the ID within a PCI group: The UE further synchronizes its timing with the base station by decoding its Narrowband Synchronization Signal (NSSS), which is also part of the SSB. The NSSS provides more precise timing information and the ID within a PCI group, which is a
3-bit value that identifies a specific cell within a PCI group. The ID within a PCI group ranges from 0 to
7. By combining the PCI group number and the ID within a PCI group, the UE can obtain the full PCI, which is a 10-bit value that uniquely identifies a cell.
Obtain other cell information: The UE decodes other signals and channels in the SSB to acquire other cell information, such as system bandwidth, subcarrier spacing, frame structure, etc. These signals and channels include Demodulation Reference Signals (DMRS), Master Information Block (MIB), System Information Block (SIB), etc.
Obtain the cell signal quality: The UE measures the cell signal quality based on various indicators, such as Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference-plus-Noise Ratio (SINR), etc. These indicators reflect the strength, quality, and interference level of the received signal.
NEW QUESTION # 30
Which of the following is not the cause of cell unavailability due to system faults (specified using
N.Cell.Unavail.Dur.System)?
- A. Faults on an RF module's TX or RX channels
- B. Board faults
- C. CPRI link 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 # 31
Which of the following statements about the space principles for 5G BBU installation are correct?(Select All that Apply)
- A. If the installation space is insufficient, the BBU can be installed on a wall. Ensure that the wall meets the load bearing requirements.
- B. If the space is greater than 600 mm, a cabinet can be added to install the BBU.
- C. If the remaining space of an existing cabinet is greater than 4 U, the BBU can be installed directly.
- D. If the installation space is insufficient, install 5G boards directly into the existing 4G B8U.
Answer: A,B,C
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 # 32
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 share both the downlink and uplink spectrums.
- C. 2.1 GHz NR and 2.1 GHz LTE only share the 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 # 33
Which of the following is not a typical application scenario of massive MIMO?
- A. Densely populated urban areas
- B. Suburban areas with light traffic
- C. High-rise buildings
- D. Large venues
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 # 34
Which of the following statements about throughput-related indicators are correct?(Select All that Apply)
- A. Throughput is more accurate if the last small packet of each data transmission burst and its transmission duration are added.
- B. 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.
- 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: B,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 # 35
Which of the following protocol layers has been added to the 5G air interface protocol stack compared with
4G?
- A. MAC
- B. SDAP
- C. RRC
- D. POCP
Answer: B
Explanation:
Explanation
According to the HCIA-5G V2.0 Exam Outline, SDAP is a new protocol layer added to the 5G air interface protocol stack compared with 4G. SDAP stands for Service Data Adaptation Protocol, and it is used to map QoS flows to data radio bearers and perform header compression and decompression.
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. 2.1 GHz NR and 2.1 GHz LTE share both the downlink and uplink spectrums.
- C. 2.1 GHz NR and 2.1 GHz LTE only share the 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 # 37
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. 64T64R AAUs provide higher coverage gains than 32T32R AAUs.
- C. They support LTE-NR dual-mode on some frequency bands.
- 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 # 38
Under the same gNodeB, an NR TDD cell supports the same maximum number of RRC_CONNECTED UEs as an NR FDD cell.
- A. True
- B. False
Answer: B
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 # 39
Which of the following events is used by the gNodeB to trigger a blind redirection procedure?
- A. A1
- B. A3
- C. A4
- D. A2
Answer: B
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 # 40
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Huawei H35-580_V2.0 certification exam is a challenging exam that requires a comprehensive understanding of 5G technologies and their applications. Candidates need to have a solid understanding of the exam syllabus and should be familiar with the latest industry trends and best practices. Studying for this certification exam requires time, effort, and dedication, but the rewards are well worth it.
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