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H3C GB0-371 Exam Syllabus Topics:

H3C Constructing H3C High-Performance Campus Networks Sample Questions:

1. 可以实现跨越多个交换机的镜像技术是

A) 本地镜像
B) 端口镜像
C) 流镜像
D) 远程镜像

2. 在如图所示的交换网络中,交换机 SWA 上设置 VLAN10 为 Isolate-user-vlan VLAN2 和 VLAN3 为 VLAN 10 的 Secondary VLAN ；交换机 SWB 上创建 VLAN2-VLAN20 ,并且设置 VLAN20 为 Isolate-user-vlan , VLAN4 为 VLAN20 的 Secondary VLAN 按照如图所示设置好各设备的 IP 地址后,下面说法正确的为（选择一项或多项)

A) SWB 的报文从 SWA 的 GigabitEthem1/0/3 端口进入,从 GigabitEthem1/0/1 端口出来后所带的 VLANTag 为 VLAN2
B) PCA 的报文从 SWA 的 GigabitEther1/0/1 端口进入,从 GigabitEther1/0/3 端口出来后不带 VLAN Tag
C) PCA 的报文从 SWA 的 GigabitEthem1/0/3 端口出来,进入 SWB 的 GigabitEthe1/0/3 端口后所带的 VLAN Tag 为 VLAN2
D) SWB 访问 PCA 时,报文从 SWB 的 GigabitEthem1/0/4 所带的 VLAN Tag 为 VLAN 1

3. 局域网存在环路可能会导致 .

A) 端口双工模式发生变化
B) 端口速率发生变化
C) MAC 地址学习错误
D) 广播风暴

4. 如图组网, SWA 和 SWC 启用 STP , SWC 为根, SWB 没有启用 STP 初始时链路 2 没有连接, PCB 可以将数据发到 PCA ,如果此时链路 1 故障,维护人员将链路 2 连接,则关于 PCB 到 PCA 数据传送业务的恢复过程说法正确的有（假设 PCA 不会主动发送数据)

A) 由于 SWB 没有启用 STP ,则 PCB 到 PCA 业务恢复默认需要 300 秒的时间
B) SWB 的端口 E0/1 可以立即进入转发状态,不需要延迟
C) 该情况下,默认 15 秒后, PCB 到 PCA 的业务即可恢复
D) SWA 会产生 TCNBPDU 并通知 SWC , SWC 会发送 TC 置位的配置 BPDU ,此后一段时间 SWC 和 SWA 的 MAC 地址老化时间将变为 Forward Delay 时长

5. 下面关于 H3C 三层交换机 VLAN 接口的 IP 地址描述正确的是

A) 只有给两个及两个以上的 VLAN 接口配置了 IP 地址,交换机才具有三层路由转发功能
B) 只要给一个 VLAN 接口配置 IP 地址,交换机就具有三层路由转发功能
C) 当给 VLAN 接口配置主 IP 地址时,如果接口上已经有主 IP 地址,必须删除原主 IP 地址才能配置新的主 IP 地址
D) 在删除 VLAN 接口的主 IP 地址之前必须先删除从 IP 地址

Solutions: