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H3C GB0-372 Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

Question 1

组播 IP 地址为 229.130.130.1 ,其对应的组播 mac 地址为 .

A. 01-00-5E-02-82-01
B. 00-00-5E-02-82-01
C. 01-00-5E-82-82-01
D. 00-00-5E-82-82-01

Question 2

主机 PCA 的 IP 地址为 40.1.1.1 , MAC 地址为 0011.1111.1111 , PCA 连接在交换机 SWA 的 GigabitEthernet1/0/1 端口上在交换机 SWA 上配置了如下命令:
[SWA] vlan 10
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] protocol-vlan ipv4
[SWA-vlan20] quit
[SWA] vlan 30
[SWA-vlan30] quit
[SWA] mac-vlan mac-address 0011 1111-1111 vlan 30
[SWA] vlan 40
[SWA-vlan40] ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[SWA-vlan40] quit
[SWA] interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1] port link-type hybrid
[SWA-GigabitEthernet1/0/1] port hybrid pvid vlan 10
[SWA-GigabitEthernet1/0/1] port hybrid vlan 10 20 30 40 untagged
[SWA-GigabitEthernet1/0/1] port hybrid protocol-vlan vlan 20 0
[SWA-GigabitEthernet1/0/1] port hybrid ip-subnet-vlan vlan 40
[SWA-GigabitEthernet1/0/1] mac-vlan enable
配置完成后,可以判断 PCA 会加入

A. VLAN 30
B. 配置命令有误
C. VLAN 10
D. VLAN 40
E. VLAN 20

Question 3

在如图所示的交换网络中,交换机 SWA 上设置 VLAN10 为 Super VLAN , VLAN2 和 VLAN3 为 VLAN10 的 Sub VLAN ,端口 Ethernet1/0/3 为 Trunk 端口, PVID 为 VLAN1 ,允许所有 VLAN 通过；交换机 .SWB 上创建 VLAN2~VLAN20 ,端口 Ethernet1/0/4 为 Trunk 端口, PVID 为 VLAN1 ,允许所有 VLAN 通过 SWA 上查看 Ethernet 1/0/3 端口信息,下面显示正确的为

A. [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 （ sec ) Port link-type: trunk VLAN passing: 1 （ default vlan ), 2 VLAN permitted: 1 （ default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q
B. [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 （ sec ) Port link-type: trunk VLAN passing: 1 （ default vlan ), 2-3 VLAN permitted: 1 （ default vlan ), 2-9 , 11-4094 Trunk port encapsulation: IEEE 802.1q
C. [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 （ sec ) Port link-type: trunk VLAN passing: 1 （ default vlan ), 2-3 , 10 VLAN permitted: 1 （ default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q
D. [SWA] display interface Ethernet 1/0/3 Ethernet1/0/3 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 （ sec ) Port link-type: trunk VLAN passing: 1 （ default vlan ), 2 VLAN permitted: 1 （ default vlan ), 2-9 , 11-4094 Trunk port encapsulation: IEEE 802.1q

Question 4

对于组播分发树模型,以下表述正确的是。

A. 组播分发树模型分为 SPT 和 RPT 两种
B. 不同组播源以自己为根,独立建立 RPT
C. RPT 上的每台路由器都会维护（ * , G )表项
D. SPT 上的每台路由器都会维护（ S , G )表项

Question 5

如图组网,交换机启用 RSTP ,；假设各链路开销值均相同,则下列说法正确的有

A. 如果 SWD 上有多个 Alternate 端口,则当根端口 DOWN 掉后, SWD 会从这些 Alternate 端口中选择优先级最高的端口作为新的根端口
B. 如果 SWD 的端口 EO/1 DOWN 掉,则 SWD 的端口 EO/2 会立即从 Alternate 端口转变为新的根端口
C. 假设将 SWB 和 SWC 的生成树运行模式修改为 STP 则 SWD 的 Alternate 端口变为新的根端口后仍然可以直接进入转发状态
D. 拓扑收敛后 SWD 将会有一个端口为 Alternate 端口

Solutions: