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H3C Building H3C Wireless Network V8.0 Sample Questions:

1. 以下哪些无线 WLAN PHY 层协议只能工作在 2.4G 频段 ____ 。

A) 802.11b
B) 802.11ax
C) 802.11g
D) 802.11n

2. 以下哪些技术为 802.11n 对原有 802.11a/b/g 技术的改进点 ?

A) OFDM-MIMO
B) 40MHz 信道捆绑
C) 帧聚合
D) Short GI

3. 使用防水胶带对天线各接头部分进行防水密封是为了 _______ 。

A) 防止各接头部分断开
B) 防止电磁干扰
C) 防止接头被电击损坏
D) 防止水进入各接头连接器并渗入到馈缆中导致馈缆中导致馈缆损坏。

4. 在 802.11i 标准中,需要通过硬件实现加密的协议是（)所以,需要网卡硬件支持。

A) WEP
B) TKIP
C) PSK
D) AES

5. 对于无线密集用户区,通过下面的哪一种最佳方式提高每个用户的带宽和性能 ?

A) 增大发射功率
B) 提高天线增益
C) 增加 AP ,并在 AP 间负载均衡
D) 增大 AP 的上行链路带宽

Solutions: