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H3C GB0-342 Exam Syllabus Topics:

H3CSE-WLAN Sample Questions:

Question 1

莫度都醫离需要的工作频段,且其通带频率越接近无线系统的工作频率越好,而没有多余的通频带,这样可以保证最佳效果；其次,必须采用有滤波功能的合路器,端口间的间隔度一段要大于 80dB ,可以最

A. 错误
B. 正确

Question 2

在室外桥接的勘测时,主要考虑因素就是无线视距的问题。在站点上应该能看到对端的天线,中间不能有障碍物。一般情况下,解决视距问题和和 I Fresnel 区间问题可以通过以下方法。
其中最为简单有效的方法是 ?

A. 选择高性能天线,可以解决"部分不可视"问题。
B. 提升天线的高度
C. 清楚 Fresnel 区内的障碍物,如砍掉树木。
D. 选择一台良好的中继设备。

Question 3

在无线网络勘测过程中,以下说法正确的是:

A. 在进行无线网络勘测时,需要保证覆盖范围与实际应用需求区域相同,当信号的覆盖受到障碍物的影响而导致无线信号覆盖范围无法满足实际应用需求区域时,则需要及时地调整部署方案。
B. 在进行室内的多 AP 部署时,在满足一定用户密度的无线应用需求下,要选择合适的 AP 安装位置、安装方式、发射功率等,以尽可能的减少三维空间中的信号可见数量。
C. 在进行室内的多 AP 部署时,为保证有较好的信号强度指标, AP 应工作在最大发射功率,同时需要注意 AP 间的信道划分。
D. 当在三维空间内规划信号覆盖时,跨楼层的信号泄漏问题难以避免。所以,对于信号泄露带来的无线链路质量下降问题需加以考虑和优化。

Question 4

Wlan 工程中哪些部位的安装不规范,可能导造成对无线信号覆盖强度和质量的影响

A. 天线
B. 线缆（网线、馈线、电源线)
C. AP
D. 供电

Question 5

以下哪些技术为 802.11ac 引入的关键技术和改进点

A. 同时支持 2.4G 和 5G
B. 80MHz 和 160MHz 信道捆绑
C. 256-QAM 调制
D. MU-MIMO 技术

Solutions: