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H3CSE-WLAN Sample Questions:

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

2. 以下哪些操作方法能够减少信号干扰 ?

A) 采用非重叠信道进行网络优化
B) 采用 11a 和 11g 混合部署方式
C) 调整部分 AP 的发射功率
D) 排查并消除现场环境中的干扰源,如微波炉、蓝牙和无绳电话等

3. 在点到点（ PtP )的无线传输中,最适合的天线类型是

A) 两端定向天线
B) 两端全向天线
C) 一端全向天线,一端定向天线

4. 以下哪些无线 WLAN PHY 层协议只能工作在 5G 频段 ?

A) 802.11ax
B) 802.11a
C) 802.11ac
D) 802.11n

5. WLAN 合路系统设计方法包括:

A) 对于每楼层环境布局相同的分布式部署设计时,可选择均匀对称的天馈设计,比如每层的合路位置, AP 数量,耦合器和功分器数量,器件规格等都可以统一
B) 合路系统扩容有两种方式,一是在系统末端即天线处进行改造,插入合路器,增加 AP ；二是使用专用 WLAN 双 AP 合路器
C) 在原有室分系统上进行增加 AP 合路点时,如果原有系统存在功率放大设备,则 AP 点合路位置选择在功放器件后方。
D) 一般情况下,合路系统的主通路上,不能有超过 1 路的 WLAN 信号,会造成 WLAN 信号互扰而无法解调

Solutions: