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H3C GB0-372 Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

1. 当 IGMPV2 主机离开某组播组时,会发送 Leave Group 报文,如下表述正确的是

A) Leave 报文的目的地址与报文中的 Group Address 地址相同
B) 查询路由器收到 Leave 报文后立即发送特定组查询报文
C) Leave 报文的目的地址为 224.0.0.2
D) 查询路由器收到 Leave 报文后立即删除相关 Group 的组播组表项

2. 在如图所示的交换网络中,交换机 SWA 上设置 VLAN10 为 lsolate-user-vlanVLAN2 和 VLAN3 为 VLAN10 的 Secondary VLAN 在以下交换机 SWA 上 VLAN10 虚接口链路层 UP? （选择一项或多项)

A) GigabitEthernet1/0/1 、 GigabitEthernet1/0/2 和 GigabitEthem1/0/3 三个端口都 UP
B) GigabitEthernet1/0/3 端口 UP
C) GigabitEthernet1/0O/2 端口 UP
D) GigabitEthernet1/0/1 端口 UP

3. 关于 MSTP 的计算过程,说法正确的有

A) MSTP 中由于链路两端的端口在不同的实例中可能均为指定端口,所以链路两端的端口可能同时既会接收也会发送 MST BPDU
B) 在进行 CST 计算时,会优先考虑外部路径开销,只有在外部路径开销相同时才会比较内部路径开销
C) CST 上的 Alternate 端口和 Backup 端口一定是域边界端口,一定不会处于 MST 域内
D) MSTP 的计算过程为,首先通过 MSTBPDU 进行 CST 和 IST 的计算,然后域内的交换机发送 MSTIBPDU 进行各实例生成树的计算

4. 客户要求在网络设计时,关键部位必须有高可靠性设备,且可靠性要达到 99.999% 则设备的运行情况应满足

A) 每年故障时间不超过 1 分钟
B) 每年故障时间不超过 6 分钟
C) 每年故障时间不超过 3 分钟
D) 每年故障时间不超过 9 分钟

5. 三层交换机收到数据帧进行二 / 三层转发判

A) 如果数据帧的目的 MAC 地址是本交换机的 VLAN 接口 MAC 地址,交换机做三层转发
B) 如果数据帧的目的 IP 地址和源 IP 地址不是同一网段,则交换机查找路由表做三层转发
C) 如果数据帧的目的 IP 地址和源 IP 地址是同 - 网段,则交换机做二层转发
D) 如果数据帧的目的 MAC 地址不是本交换机的 VLAN 接口 MAC 地址,交换机查找 MAC 地址表做 VLAN 内二层转发

Solutions: