Huawei H35-480_V3.0 - HCIA-5G-RAN V3.0 Exam

A. The UBBP board in the BBU5900 provides CPRI (Common Public Radio Interface) ports for communication with RF (Radio Frequency) modules. CPRI is an interface standard that is used to transfer baseband signal data between the BBU and the RF modules. D. The UBBP board also processes uplink and downlink baseband signals. This includes signal demodulation, decoding, and modulation, as well as error correction, signal filtering, and other signal processing functions.

According to the official Huawei documentation, during 5G single site verification, you need to test the user access, rate, coverage, handover, and interference. Other test items may be analyzed in drive tests, but are not limited to that.

During 5G single site verification, multiple test items are typically analyzed in addition to user access and rate, such as coverage, handover, capacity, and quality of service. Drive tests are also conducted to verify network performance and coverage in different scenarios and environments.

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.

According to Huawei's official documentation, the purpose of replaying logfiles is to reproduce the test process, and the GENEX Probe can work without a license in this case. This allows users to test the results of previous tests and compare them with new test results, which is useful for troubleshooting and network optimization.

According to Huawei's official documentation, gNodeBs send TPC (Transmit Power Control) commands to UEs over PDCCHs to control the transmit power of PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel).

The imbalance between uplink and downlink coverage in C-band is not fixed, it varies depending on the network configuration, location, and other factors. Generally speaking, it's hard to provide an exact number for this imbalance, as it depends on the specific network conditions and the equipment used.

However, a common practice is to use more power in downlink than uplink, this is due to the fact that downlink is more sensitive to path loss than uplink, and also because the downlink signal is intended to cover a larger area than the uplink. Therefore, the imbalance is commonly in the range of 3 to 6 dB, and it's more likely to be at the lower end of that range. So, the correct answer is B. 3dB It's worth noting that the C-band is not the most popular frequency band for 5G network deployment, it's just one of the many frequency bands that are being used for 5G deployment, and the most popular frequency bands for 5G deployment vary depending on the country, region, and operator.

An AAU is responsible for performing up/down conversion of spectrum, power amplification, signal filtering, and analog-to-digital/digital-to-analog conversion. It does not perform baseband data processing. This is stated in the official 3GPP documentation which states: "The AAU performs up/down conversion of spectrum, power amplification, signal filtering, and analog-to-digital/digital-to-analog conversion." Here is a link to the relevant 3GPP documentation for further reference: https://www.3gpp.org/dynareport/33222.htm