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H3CSE-WLAN Sample Questions:

1. 对于教育物联网方案,以下描述错误的是 ____ 。

A) 教育物联网主要通过智能手环采集学生健康数据后通过 T300 模块上报到服务器。
B) T300 模块需要本地功能,不能通过 AP 供电。
C) 教育物联网应用层数据展示是通过绿洲云管理平台呈现。
D) 教育物联网方东中 AP 既能提供无线接入又能为智能手环健康数据提供链路通道。

2. STA 和 AP 在进行接入认证和关联之前都是需要了解相互的信息以及进行能力级别的交互,这个过程是可以通过下面哪些报文的广播或交互得以实现的 ?

A) Authentication Request
B) Beacon
C) Probe Response
D) Probe Request

3. 802.11 网络的介质访问机制为 ______ 。在此机制中,当发送方检测到媒体空闲时 _______ 。

A) CSMA/CD :等待 IFS 时间长度以后,启动一个定时器 Back-off Timer ,当定时器倒计时到零时开始发送报文。
B) CSMA/CA :等待 IFS 时间长度以后,立即发送数据,如果产生冲突则启动一个定时器 Back-off timer ,当定时器倒计时到零时再次重新发送报文。
C) CSMA/CA :等待 IFS 时间长度以后,启动一个定时器 Back-off Timer ,当定时器倒计时到零时开始发送报文。
D) CSMA/CD :等待 IFS 时间长度以后,立即发送数据,如果产生冲突则启动一个定时器 Back-off-timer ,当定时器倒计

4. 对于室外天线安装,天线的风阻可以不用考虑。

A) 正确
B) 错误

5. FATAP 在未通过 DHCP 获取地址时,默认地址为 ?

A) 192.168.0.1
B) 192.168.0.50
C) 192.168.0.100
D) 192.168.100.1

Solutions: