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H3C GB0-342 Exam Syllabus Topics:

H3CSE-WLAN Sample Questions:

1. 在 802.11b/g 协议在中国共开放 13 个信道（ 1--13 ),请从这 13 个信道中选择 3 个相互不干扰的信道,以下哪组的选择是正确的 ?

A) 1 , 5 , 9
B) 2 , 7 , 12
C) 1 , 2 , 3
D) 1 , 6 , 11

2. 无线终端是否漫游,取决于客户端驱动的裁决机制,对于 Inter 无线网卡,当把"漫游主动性"置为 _____ 时,无线客户端将不在敏感切换,只有当链接质量下降才切换到另一接入点。

A) 最低值
B) 默认值
C) 任意值
D) 最高值

3. 关于 802.11n ,哪些描述是正确的 _____?

A) 802.11n 速度可达 300M-600M ,现阶段主流设备均为 300Mbps
B) 802.11n 推荐采用千兆 POE 交换机供电
C) 802.11nAP 建议使用双频模式
D) 802.11n 向下兼容 802.11a/b/g

4. 无线链路切换控制参数说法正确的是

A) Link Switch Margin :备份链路切换为主链路信号阈值,备份链路的 RSS I 和主链路的 RSS I 相比,信号差值大于 Link Switch Margin 值时,备链路切换为主链路
B) Link Hold Time :为了防止主链路频繁的切换,当备份链路切换为主链路时,主链路保持的最短时长。
C) Link-maximum-number :车载 MR 与轨旁建立 MESH 链路数量,包括主链路和备份链路
D) Link Hold RSSI :建立和维持链路所需要的最小信号强度
E) Link Saturation RSSI :当对端信号强度超过该阈值时,可能会引起信号接收饱和,造成无法解调,链路失效,这时会立即进行链路切换

5. 无线控制器支持的 IRF 堆香组网方式包括 ____ 。

A) 业务板同框 IRF
B) 双机直连 IRF
C) 双机跨交换 IRF
D) 业务板跨框 IRF

Solutions: