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H3CSE-WLAN Sample Questions:
1. 在 802.11b/g 协议共开放 14 个信道( 1--14 ),以下哪些信道间是相互不干扰的 ?
A) 1 , 7 , 14
B) 1 , 2 , 3
C) 1 , 6 , 11
D) 2 , 7 , 12
2. 对于室外天线安装,天线的风阻可以不用考虑。
A) 错误
B) 正确
3. 以下关于数字带宽与模拟带宽的说法正确的是
A) 在无线通信系统中,数字传输最大速率受限于模拟信道的带宽。
B) 在信道带宽一定的情况下,实际的信道容量主要取决于通信系统信噪比以及采用的调制,传输技术等因素。
C) 模拟带宽是指模拟电子系统中的频率范围,通常单位为赫兹( Hz )。
D) 数字带宽是指在单位时间内发送的信息量,通常单位为比特每秒( bps )而在数据通信系统中实际的吞吐量通常大于系统的数字带宽。
4. 以下对于 SSID 隐藏功能描述正确的是
A) MU-MIMO 技术
B) 80MHz 和 160MHz 信道捆绑
C) 256-QAM 调制
D) 同时支持 2.4G 和 5G
5. 关于 cupid 定位功能描述正确的是
A) 高精度的本地时钟确保了测量结果的准确,最终提升了定位精度。
B) 采用了类似声纳的工作原理,接收和发送的时钟都来自本地 AP 的时钟,避免了单向测量(如 GPS 系统)的复杂的时钟同步的难题。
C) 相对于 RSSI 值受传输过程中的环境因素影响较大,环境对 RTT 值的影响相对较小。
D) CUPID 系统采用基于电磁波传输时间差 RT 的技术路线。在不采样的情况下,实现了更精确、更稳定的定位效果。
Solutions:
| Question # 1 Answer: A,C,D | Question # 2 Answer: A | Question # 3 Answer: A,B,C | Question # 4 Answer: A,B,C,D | Question # 5 Answer: A,B,C,D |






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