Broadcast address is not an IPv6 address type. IPv6 does not support broadcast addressing, but uses multicast addressing instead. The other options are valid IPv6 address types. Unicast address identifies a single interface, multicast address identifies a group of interfaces, and anycast address identifies multiple interfaces but delivers packets to only one of them.

References: https://support.huawei.com/enterprise/en/doc/EDOC1100058940/8a8f1c9b/ipv6-address-types

According to the Huawei documents and resources, the encapsulation formats used for EAP termination in 802.1X authentication are as follows:

• B. EAPoL: The client and access device exchange information using EAPoL packets across the LAN2.
• C. EAPoR: The access device directly encapsulates the received EAP packets into RADIUS using EAP over RADIUS (EAPoR) packets2.

Therefore, B and C are the correct answers. References: 2: https://support.huawei.com/enterprise/en/doc/EDOC1100086527

According to the Huawei documents and resources, the features and application scenarios of the wireless positioning solutions are as follows:

• Wi-Fi terminal positioning: Performs network-side positioning generally based on the RSSI, but provides low positioning accuracy. This method applies to scenarios such as precision marketing and customer flow analysis in shopping malls.
• Bluetooth tag positioning: Runs based on the built-in Bluetooth module of an AP. The AP reports data to a positioning engine for location resolution. This positioning technology provides low positioning accuracy and applies to asset positioning and personnel positioning scenarios.
• UWB positioning: Provides high positioning accuracy, and is applicable to scenarios that require high accuracy, such as intelligent manufacturing, warehousing logistics, and mechanical manufacturing.
• Bluetooth terminal positioning: Runs based on the built-in Bluetooth module of an AP, which can be implemented on either the network side or terminal side.

Therefore, Wi-Fi terminal positioning - 3, Bluetooth tag positioning - 4, UWB positioning - 2, Bluetooth terminal positioning - 1 is the correct answer. References: : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/wi-fi-terminal-positioning : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/bluetooth-tag-positioning : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/uwb-positioning : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/bluetooth-terminal-positioning

According to the Huawei documents and resources, the definitions of the short-range wireless IoT technologies are as follows:

• ZigBee: IEEE 802.15.4-based wireless communication technology is a short-range, and low-power wireless communication technology that supports star, mesh, and hybrid networking.
• Bluetooth: With the emergence of IoT industries such as smart wearables, smart home, and Internet of Vehicles, short-range communication technologies are attracting more and more developers.
• REID: Its basic principle is to automatically identify objects based on the transmission characteristics of radio signals and space coupling (inductance or electromagnetic coupling) or radar reflection.
• Wi-Fi: Wireless networking technology based on IEEE 802.11 is the most popular WLAN technology.

Therefore, ZigBee - 1, Bluetooth - 3, REID - 2, Wi-Fi - 4 is the correct answer. References: : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/zigbee : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/bluetooth : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/rfid : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/wi-fi

According to the Huawei documents and resources, the HLD phase is the high-level design phase of a WLAN project. It involves the following items:

• Capacity planning: Determines the number and types of devices required for the WLAN network based on the customer’s requirements and network scale.
• Network design: Designs the network topology, IP addressing scheme, VLAN division, security policies, and other network parameters for the WLAN network.
• Deployment planning: Plans the deployment sequence, schedule, resources, and risks for the WLAN project.

AP position planning is not involved in the HLD phase. It is part of the LLD phase, which is the low-level design phase of a WLAN project. It involves the detailed design of AP positions, antenna types, channel allocation, power adjustment, and other wireless parameters for the WLAN network. Therefore, C is the correct answer. References: : https://support.huawei.com/enterprise/en/doc/EDOC1100158948/9a0d5c37/wlan-project-design