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H3CSE-RS-SW Sample Questions:

1. 客户的局域网交换机 SWA 双上行连接交换机 SWB 和交换机 SWC ,通过 SmartLink 保证链路可靠性 SWA 交换机有如下配置:
[SWA-smlk-group1] smart-link flush enable control-vlan 10 SWB 交换机有如下配置 ?
[SWB-GigabitEthernet1/0/1] smart-link flush enable control-vlan 100 SWC 交换机有如下配置:
[SWC-GigabitEthernet1/0/1] smart-link flush enable control-vlan 100
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) 不更改配置,则 SWA 交换机 SmartLink 备份功能无法实现
B) 不需要修改任何配置, SWA 交换机 SmartLink 备份功能可实现
C) 更改 SWB 交换机、 SWC 交换机接收控制 vlan 为 10 , SWB 交换机、 SWC 交换机通过流量刷新 MAC 和 ARP
D) 更改 SWB 交换机、 SWC 交换机接收控制 VLAN 为 10 ,则 SWA 交换机 SmartLink 备份功能可正常实现

2. 交换机 SWA 使用出厂缺省配置现在要把交换机 SWA 的 Ethernet 1/0/1 端口配置为 Trunk 端口, PVID 为 VLAN20 ,且允许 VLAN10 。
下面的配置过程正确的是 ________

A) [SWA] vlan10 [SWA-vlan10] quit [SWA] vlan 20 [SWA-vlan20] port Ethernet 1/0/1 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk permit vlan 10
B) [SWA] vlan10 [SWA-vlan10] quit [SWA] vlan 20 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port access vlan 20 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk permit vlan 10
C) [SWA] interfaceEthernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk pvid vlan 20 [SWA-Ethernet1/0/1] port trunk permit vlan 10 [SWA-Ethernet1/0/1] quit [SWA] vlan 10 [SWA-vlan10] quit [SWA] vlan 20
D) [SWA] vlan10 [SWA-vlan10] quit [SWA] vian 20 [SWA-vlan20] quit [SWA] interface Ethernet 1/0/1 [SWA-Ethernet1/0/1] port link-type trunk [SWA-Ethernet1/0/1] port trunk pvid vlan 20 [SWA-Ethernet1/0/1] port trunk permit vlan 10

3. 关于 RSTP 中的端口状态和角色,说法正确的有

A) RSTP 中端口共有三种状态,其中端口进入 Learning 状态后开始收发 BPDU ,并确定端口角色
B) RSTP 中的 Discarding 端口如同 STP 中的 Blocking 端口,端口在 Discarding 状态时不会发送 BPDU ,但会接受 BPDU
C) RSTP 中的根端口和指定端口的定义和 STP 中相同
D) RSTP 中 Alternate 端口用于为根端口做备份, Backup 端口用于为指定端做备份

4. 关于组播分发树模型 SPT ,以下表述正确的是。

A) SPT 上的每台路由器都会维护（ S , G )表项
B) SPT 上的每台路由器都会维护（ * , G )表项
C) 不同组播源以自己为根,独立建立 SPT
D) SPT 模型中,组播源到达任何一个接收者所经过的路径都是最优的

5. 二台路由器通过局域网连接在一起,组成 VRRP 备份组各接口上配置如下:
[RTA-GigabitEthernet1 /0] display this
Ip address 192.168.0.252 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
[RTB-GigabitEthernet1/0] display this
Ip address 192.168.0.253 255.255.255.0
Vrrp vrid 1 virtual-ip 192.168.0.254
从上述信息可以得知

A) RTA , RTB 无法选举出备份组 Master 路由器
B) RTA 为备份组 Master 路由器
C) RTB 为备份组 Master 路由器
D) RTA , RTB 都处于 VRRP Master 状态

Solutions: