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質問 # 15
Which type of information about NR cells is carried in the neighboring NR cell MRs reported by UEs?
- A. MACCE
- B. RSRP
- C. TA
- D. PCI
正解：B、D
質問 # 16
During single site verification, which of the following messages can be traced by the Probe to analyze problems?
- A. L3 Messages
- B. Xn Messages
- C. NG Messages
- D. L1 Messages
正解：D
質問 # 17
Which of the following MML commands can be used to query version information relating to the software stored on the gNodeB?
- A. LST VER
- B. LST PATCH
- C. DSP SOFTWARE
- D. LST SOFTWARE
正解：D
質問 # 18
In the inter-site DC solution, the X2 interface can be used to implement transmission interconnection between the LTE and NR sites. Which of the following is the requirement of the transmission delay in such case?
- A. <30ms
- B. <20ms
- C. <40ms
- D. <10ms
正解：B
質問 # 19
Which of the following methods can be used by a gNodeB to obtain downlink channel characteristics? (Choose All that Apply)
- A. UE-reported uplink PMI
- B. Uplink SRS signal
- C. DMRS of the uplink PUSCH of the UE
- D. Downlink DMRS signal
正解：C、D
解説：
The correct answers are A. DMRS of the uplink PUSCH of the UE and B. Downlink DMRS signal. According to the official Huawei documentation, gNodeBs can use downlink DMRS signals or the DMRS of the uplink PUSCH of the UE to obtain downlink channel characteristics. The downlink DMRS signals contain information about the downlink channel characteristics, and the DMRS of the uplink PUSCH of the UE can be used to measure the uplink channel characteristics. The uplink SRS and PMI signals reported by the UE are used to determine the uplink channel characteristics. For more information, please see this link: https://www.huawei.com/en/doc/NR-BBU-Design-V1.1/18104301/bbuf-cqi-report.html
質問 # 20
Which of the following can be used to check whether an antenna is reversely connected during NR single site verification?
- A. Transmission test
- B. DT around the site
- C. VSWR test
- D. Fixed-point CQT
正解：A
質問 # 21
In NSA networking, which of the following commands can be used to check whether the Sl-U interface is normal?
- A. DSP GTPUECHO
- B. DSP SCTPLNK
- C. DSP IPPATH
- D. DSP S1INTERFACE
正解：C、D
質問 # 22
SSB GSCN is the center frequency number of an NR cell.
- A. False
- B. True
正解：B
解説：
SSB GSCN is the center frequency number of an NR cell. SSB GSCN stands for "SS block group-specific cell number" and is used to identify the center frequency of an NR cell. This value is used in combination with the operating bandwidth of the cell to determine the physical layer resource grid for the cell. As such, it is important for the correct SSB GSCN to be configured for the cell in order to ensure the correct channel coding.
https://www.qualcomm.com/content/dam/qcomm-martech/dm-assets/documents/powerpoint_presentation_-_making_5g_nr_a_reality_february_2020_web.pdf Making 5G NR a Commercial Reality A unified, more capable 5G air ...
https://www.qualcomm.com/content/dam/qcomm-martech/dm-assets/documents/powerpoint_presentation_-_making_5g_nr_a_reality_february_2020_web.pdf
https://www.gtigroup.org/d/file/Resources/rep/2019-07-05/cbf7810256b4c312c460863fcb77bd58.pdf GTI 5G Device Power Consumption White Paper
https://www.gtigroup.org/d/file/Resources/rep/2019-07-05/cbf7810256b4c312c460863fcb77bd58.pdf In 5G NR, the SSB (Secondary Synchronization Signal Block) is used to provide the time and frequency synchronization information to the mobile devices. It is transmitted in the frequency domain and it consists of two parts: the SSB GSCN (Secondary Synchronization Signal Block - Group and Sequence Number) and the SSB MIB (Secondary Synchronization Signal Block - Master Information Block).
The SSB GSCN is a unique identifier that indicates the center frequency number of the cell. It is used to identify the cell and to determine the frequency offset of the cell with respect to the carrier frequency.
So, the statement is true, SSB GSCN is the center frequency number of an NR cell. It's worth noting that the SSB MIB contains other system information such as the system bandwidth, the transmission bandwidth configuration, and the number of symbols in a slot.
質問 # 23
5G inherits the frame structure of 4G, but the slot length can be adjusted based on different SCSs. Which of the following is not a 5G slot length?
- A. 10ms
- B. 0.25ms
- C. 0.5ms
- D. 1ms
正解：A
解説：
5G inherits the frame structure of 4G, but the slot length can be adjusted based on different subcarrier spacings (SCSs). The 5G slot length can be adjusted from 0.25ms to 1ms, with each slot containing one or more symbols.
The shorter the slot length, the higher the frequency and the less the coverage, but it allows for more efficient use of resources and higher data rates. The longer the slot length, the lower the frequency, the better the coverage, but it's less efficient in terms of resource usage and data rate.
So, the correct answer is B. 10ms, is not a 5G slot length. It's worth noting that the 5G standard defines several slot lengths, and the choice of slot length depends on the specific use case and the requirements of the service being supported.
質問 # 24
In SA networking, the mobile country code (MCC) and mobile network code (MNC) information added on the gNodeB must be consistent with the PLMN information on the core network.
- A. False
- B. True
正解：B
質問 # 25
According to 3GPP specifications, which of the following is not an RRC state in 5G?
- A. RRC_CONNECTED
- B. RRC_ACTIVE
- C. RRC_IDLE
- D. RRC_INACTIVE
正解：B
解説：
Explanation
https://devopedia.org/5g-ue-rrc-states
質問 # 26
During a 5G service test, an NSA UE connects to the Probe and then accesses a 4G cell. It is found that the cell does not deliver B1 measurement configurations. Which of the following is not a possible cause for this?
- A. The B1 threshold is too high.
- B. Neighboring LTE cells and SCGs are not configured.
- C. The NSA switch is not turned on.
- D. The UE does not support EN-DC.
正解：A
解説：
According to the official Huawei documentation, the possible causes for a 4G cell not delivering B1 measurement configurations during a 5G service test are that the UE does not support EN-DC, the NSA switch is not turned on, or neighboring LTE cells and SCGs are not configured.
質問 # 27
Which of the following MML commands can be used to query version information relating to the software stored on the gNodeB?
- A. LST VER
- B. LST PATCH
- C. DSP SOFTWARE
- D. LST SOFTWARE
正解：D
解説：
The correct MML command to query version information relating to the software stored on the gNodeB is LST SOFTWARE. This command will list the version information of the software installed on the gNodeB, including the version numbers, software names, and more. This is stated in the official Huawei documentation, which states: "Use the LST SOFTWARE command to check the version information of the software installed on the gNodeB, including the version numbers, software names, and more." Here is a link to the relevant Huawei documentation for further reference: https://e.huawei.com/en/products/base-station/bbu5900/overview
質問 # 28
Which of the following devices is used to implement service slicing on the 5G RAN side?
- A. AAU
- B. RRU
- C. Antenna
- D. BBU
正解：D
質問 # 29
Which of the following actions are involved in NAS procedure management in 5G? (Choose all that Apply)
- A. Session management
- B. RRC reestablishment
- C. RRC connection setup
- D. Registration management
正解：A、C、D
解説：
NAS (Non-Access Stratum) procedure management in 5G involves three specific actions: registration management, session management, and RRC connection setup. Registration management involves sending and receiving of NAS messages related to the establishment of user-network connections, such as attach and detach procedures. Session management involves sending and receiving of NAS messages related to the management of user session related information, such as security context management. RRC connection setup involves sending and receiving of NAS messages related to the establishment, modification, and release of RRC connections. RRC reestablishment is not involved in NAS procedure management in 5G.
https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.02.01_60/ts_138331v150201p.pdf TS 138 331 - V15.2.1 - 5G; NR; Radio Resource Control (RRC ...
https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.02.01_60/ts_138331v150201p.pdf
https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/application_notes/1sl/1SL368_0e_5G_NR_UE_RF_conformance_38.521-3.pdf
5g nr fr1 non-standalone ue rf conformance testing
https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/application_notes/1sl/1SL368_0e_5G_NR_UE_RF_conformance_38.521-3.pdf
https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.03.00_60/ts_138331v150300p.pdf TS 138 331 - V15.3.0 - 5G; NR; Radio Resource Control (RRC ...
https://www.etsi.org/deliver/etsi_ts/138300_138399/138331/15.03.00_60/ts_138331v150300p.pdf
質問 # 30
Which of the following frequency locking modes is not supported when the GENEX Probe is used to perform a CPE test?
- A. BAND
- B. PCI
- C. Cell frequency
- D. ARFCN
正解：A
質問 # 31
The RSRP value of the test terminal can be viewed on the GENEX Probe. Which of the following test results indicate good signal quality?
- A. 0 to 60dBm
- B. 30 to 60dBm
- C. -60dBm to -90dBm
- D. -30 to -60dBm
正解：C
解説：
"The RSRP value of the test terminal can be viewed on the GENEX Probe. A RSRP value of between -60dBm and -90dBm indicates good signal quality. Lower values indicate weaker signals, while higher values indicate stronger signals."
質問 # 32
In NSA networking, which of the following modes is used to anchor 5G NR?
- A. LTE
- B. OGSM
- C. CDMA
- D. WCDMA
正解：A
解説：
The non-standalone (NSA) mode of 5G NR refers to an option of 5G NR deployment that depends on the control plane of an existing 4G LTE network for control functions, while 5G NR is exclusively focused on the user plane.[7][8] This is reported to speed up 5G adoption, however some operators and vendors have criticized prioritizing the introduction of 5G NR NSA on the grounds that it could hinder the implementation of the standalone mode of the network
質問 # 33
If multiple IP addresses are planned for a gNodeB and the next-hop IP addresses are different, which of the following route configurations is more suitable?
- A. Destination address route configuration
- B. Direct route configuration
- C. Dynamic route configuration
- D. Source address route configuration
正解：A
解説：
In a gNodeB (generic NodeB), the routing table is used to determine the next-hop IP address for a given destination IP address. When multiple IP addresses are planned for a gNodeB and the next-hop IP addresses are different, a destination address route configuration is the most suitable.
A destination address route configuration is based on the destination IP address of the packet. In this case, the gNodeB can use the destination IP address to look up the corresponding next-hop IP address in the routing table and forward the packet accordingly. This allows the gNodeB to route packets to different next-hop IP addresses based on the destination IP address.
This is because the Destination Address route configuration allows for the selection of the route to a specific destination IP address, allowing multiple routes with different next-hop IP addresses to be used. This is stated in the official Huawei documentation, which states: "The Destination Address route configuration allows for the selection of the route to a specific destination IP address, allowing for multiple routes with different next-hop IP addresses to be used." Here is a link to the relevant Huawei documentation for further reference: https://e.huawei.com/en/products/base-station/bbu5900/overview
質問 # 34
F-OFDM over the NR air interface uses flexible subcarrier spacing to meet the requirements of different 5G service scenarios. Which of the following types of subcarrier spacing is not supported by Sub6G?
- A. 120KHz
- B. 30KHz
- C. 15KHz
- D. 60KHZ
正解：A
質問 # 35
During a 5G test, a portable computer is directly connected to the LAN port of the Huawei CPE through a network cable to obtain a dynamic IP address for communication.
- A. False
- B. True
正解：B
解説：
According to the official Huawei documentation, during a 5G test, a portable computer can be directly connected to the LAN port of the Huawei CPE through a network cable to obtain a dynamic IP address for communication.
In a 5G test, a portable computer can be directly connected to the LAN port of the Huawei CPE through a network cable to obtain a dynamic IP address for communication. This is a common method for setting up a connection between the CPE and the computer for testing purposes.
質問 # 36
What are the typical sizes of ping packets and intervals in single site verification?
- A. 1500bytes, 2s
- B. 1500 bytes,1s
- C. 32 bytes,1s
- D. 32 bytes, 2s
正解：B
質問 # 37
gNodeBs periodically send TPC commands to UEs over PDCCHs to control the transmit power of which of the following uplink channels or signals of UEs?
- A. PUSCH
- B. PUCCH
- C. SRS
- D. SS
正解：B
質問 # 38
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