H3C GB0-372 real exam prep : H3CSE-RS-SW

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H3C GB0-372 Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

1. 在如图所示的组网连接中, SWA 和 SWB 为三层交换机,运行 STP+VRRP ,且初始配置完成后 SWA 为 STP 的根和 VRRP 的 MasterSWC 为二层交换机下联接入终端下列有关网络链路故障后的描述正确

A) 当 SWB 和 SWC 之间的链路中断后, STP 其余链路上的端口状态没有变化,都仍然保持 Forwarding
B) 当图示中只有 SWB 和 SWC 之间的链路完好时, SVVA 和 SWB 都将成为 VRRP 的 Master ,此时 SWC 下端可以和网关正常通信
C) 当图示中只有 SWB 和 SWC 之间的链路完好时, VRRP 的 Master 将保持不变,但 SWC 下联终端无法和网关通信
D) 当 SWB 和 SWC 之间的链路中断后, VRRP 的 Master 将保持不变, SWC 下联终端仍然可以正常通信

2. 客户的局域网交换机 SWA 通过 GigabitEthernet 2/0/1 连接 SWB ,通过 GigabitEthernet 2/0/2 连接 SWC 且 SWA 交换机有如下配置:
[SWA] smart-link group 1
[SWA-smlk-group1] protected-vlan reference-instance 0 to 32
[SWA-smlk-group1] port gigabitethernet 2/0/1 slave
[SWA-smlk-group1] port gigabitethernet 2/0/2 master
[SWA-smlk-group1] flush enable control-vlan 10
如果交换机 SWA 、交换机 SWB 、交换机 SWC 互连接口允许所有 VLAN 通过,从上述信息可以得知

A) 如果 Gigabitethernet 2/0/1 端口故障,则 SWA 交换机将在所有 VLAN 内广播 flush 报文
B) 如果 Gigabitethernet 2/0/2 端口故障,则 SWA 交换机将在所有 VLAN 内广播 flush 报文
C) 正常情况下, SWA 交换机流量将通过 Gigabitethernet 2/0/1 上行
D) 正常情况下, SWA 交换机流量将通过 Gigabitethernet 2/0/2 上行

3. 关于生成树协议中定时器的配置,说法正确的有

A) 应该将 MaxAge 调为最小值,这样可以缩短 BPDU 的老化时间,及时发现链路故障
B) 应该将 HelloTime 调为最大值,将 Forward Delay 调为最小值,这样可以减少网络中的 Hello 消息数量,并且端口可以尽快进入转发状态
C) 适当的 Helloinme 值,可以满足降低生成树计算损耗的同时增强生成树的健壮性,取值过大或过小都会对生成树计算产生和网络的稳定产生影响
D) 不建议手工配置 Hello Forward Delay 和 Max Age ,交换机会通过网络直径值自动为定时器设置较优的值

4. 可以实现跨越多个交换机的镜像技术是

A) 端口镜像
B) 流镜像
C) 本地镜像
D) 远程镜像

5. 关于 Voice VLAN 的工作模式,说法正确的是

A) 自动模式下,系统会识别 IP Phone 发出的报文,如果匹配为语音报文,则将连接 IP Phone 的端口加入 Voice VLAN
B) 手动模式下,需要手工将 IP Phone 加入 Voice VLAN 中
C) Voice VLAN 的工作模式包含自动和手动两种
D) 手动模式下系统将不会向端口下发 ACL

Solutions: