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H3C GB0-342 Exam Syllabus Topics:

H3CSE-WLAN Sample Questions:

Question 1

以下对室分系统描述正确的是
以下对室内分布系统合路原则描述正确的是 ______

A. 一般不建议在 AP 的后面增加 WLAN 功放
B. 受用户数的限制,单个 AP 所接天线数建议不超过 15 个
C. 根据实测经验,在室内分布式系统中天线口的 wlan 信号功率在 10dBm 左右比较理想,最小不低于 5dBm ,一般要求 wlan AP 合路点的发射功率至少不低于 3G/GSM/CDMA 信号功率
D. AP 安装位置应保证以太网可达（与接入交换机之间小于 100 米),在无 POE 交换机的情况下应保证能提供本地供电。
E. AP 合路点必须在有源设备（主要是干放)后一级,因为有源设备不能通过 wlan 信号,无馈系统的所有无线器件（包括功分器,线缆,跳线等)必须能支持 WLAN 频段（ 2.4GHZ~2.4835Ghz ),且衰减控制点在一定范围内。

Question 2

增加全向天线的增益时,关于天线的覆盖范围,下列哪些描述为正确的 ?

A. 天线垂直方向的覆盖范围增加
B. 天线水平方向的覆盖范围增加
C. 天线垂直方向的覆盖范围减少
D. 天线水平方向的覆盖范围减少

Question 3

（单选)以下不属于 802.11ax 协议特有的技术是。

A. 802.11ax 调制方式支持 1024QAM.
B. 支持 160MHz 频宽的 8 信道捆绑 .
C. 802.11ax 引入 BSS-COLOR 快速识别 BSS ,提升信号接收和解调效率。
D. 802.11ax 支持上下行双方向 MU-MIMO.

Question 4

关于无线网络勘测设计过程中的注意事项,以下说法正确的是

A. 在 WLAN 工程中,需要通过现场勘测的方式了解建筑物和周围各种物质的材质,并估测其对无线信号的影响,从而来确定 WLAN 设备的安全的安装位置。
B. 在衡量墙壁等障碍物对于 AP 信号的穿透损耗时,需考虑 AP 信号入射角度。
C. 进行 AP 频点配置时,首先应对目标区域现场进行频率检测,对于覆盖区域内已有 AP 采用的信道,应尽量避免采用。
D. 室外 AP 覆盖区频点配置时,为了实现 AP 的有效覆盖,避免信道间的相互干扰,在信道分配时遵守移动通信系统的蜂窝覆盖原则。

Question 5

以下关于 H3C 无线控制器 license 注册使用说法正确的是

A. 在申请无线控制器的 Active Key 时,需要提供设备的相关信息（设备序列号、校验码)和 License Key.
B. H3C 无线控制器的 license key 是一个授权序列号,例如 173995EA490E3C14A9A66
C. 申请的 Active Key 与相关设备没有绑定关系,此 Active Key 可以使用在任何一台同型号的设备上。
D. 申请的 Active Key 与相关设备有绑定关系,此 Active Key 只能使用在这台设备上（此设备的相关信息在申请时提供)

Solutions: