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H3C GB0-342 Exam Syllabus Topics:

H3CSE-WLAN Sample Questions:

1. WLAN 优化服务产品包括哪些模块内容:

A) WIFI 网络优化评估服务
B) WIFI 网络业务质量元素测试服务
C) WIFI 网络 AC 专项优化服务
D) AC 日志分析系统
E) WIFI 网络优化实施服务
F) WIFI 网络优化管理系统

2. 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/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。
B) 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
C) 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。
D) 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。

3. 关于轨道交通无线架构说法正确的有

A) 车载 AP 采用 FAT 模式,使用 MLS P 协议实现和轨旁 AP 之间快速切换
B) 无线链路快速切换基于关键参数以及切换规则实现
C) 车载 AP 切换时, MLS P 协议代理发送协议报文更新轨旁网络设备表项
D) 轨旁 AP 使用 FIT AP ,经网线通过接入交换机与无线控制器互联

4. 以下哪些无线 WLAN PHY 层协议只能工作在 5G 频段 ?

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

5. 以下哪些技术为 802.11n 所使用的关键技术 ?

A) OFDM-MIMO
B) Short Gi
C) 帧集合
D) 信道捆绑

Solutions: