H12-351_V1.0 HCIE-WLAN (Written) V1.0 Question and Answers

Satellite positioning can achieve high positioning accuracy in outdoor scenarios, but not in indoor scenarios. This is because satellite signals are easily blocked or interfered by buildings, walls, ceilings, and other obstacles in indoor environments.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/satellite-positioning

B is false because generally, a STA roams when it detects that the signal strength is less than -70 dBm or -65 dBm, not -75 dBm.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/wlan-roaming-and-signal-strength

The display sync-configuration compare command is used to check whether the public configurations on two WACs are consistent after wireless configuration synchronization. The command output shows the differences between the configurations on the master and backup WACs. In this case, the configuration of vap-profile name 3 exists on the master WAC but not on the backup WAC.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/display-sync-configuration-compare

Radio calibration is applicable to high-density scenarios where a large number of users access the network simultaneously and require high bandwidth, such as stadiums, exhibition halls, and conference centers. Radio calibration can improve user experience by increasing the frequency bandwidth for high-load APs.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/radio-calibration

B is false because only Layer 3 VXLAN gateways need to maintain VBDIF interfaces for inter-subnet communication on a VXLAN network or communication with external non-VXLAN networks. Layer 2 VXLAN gateways do not need VBDIF interfaces.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/vxlan-gateway

According to the Huawei documents and resources, EAP termination and EAP relay are typical 802.1X authentication modes between the access device and authentication server. In EAP termination mode, the access device terminates EAP packets and encapsulates them into RADIUS packets. In EAP relay mode, the access device directly encapsulates the received EAP packets into RADIUS using EAP over RADIUS (EAPoR) packets2. Therefore, A and B are the correct answers. References: 2: https://support.huawei.com/enterprise/en/doc/EDOC1100086527