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H3CSE-RS-SW Sample Questions:

1. 客户局域网交换机 SWA 、 SWB 、 SWC 上构成 RRPP 环主环 1 ,交换机 SWB 上有如下配置信息 :
[SWB] rrpp domain 1
[SWB-rrpp-domain1] ring 1 node-mode transit primary-port gigabitethernet 2/0/1 secondary-port gigabitethernet 2/0/2 level 0
如果交换机 SWA 为主环 1 主节点,如果交换机 SWB 端口 GigabitEthem2/0/1 故障,从上述信息可以得知

A) 交换机 SWA 立即将状态切换到 Failed 状态,放开副端口
B) 交换机 SWA 将发送 Common-Flush 报文通知所有传输节点
C) SWA 将发送 Link-Down 报文通知所有节点
D) 如果交换机 SWB 发现端口 GigabitEthernet 2/0/1 口重新 Up 后,立即解除该端口的阻塞状态

2. 在交换机 SWA 上执行 displayinterface Ethernet 1/0/1 命令后,输出信息如下:
[SWA] display interface Ethernet 1/0/1
Ethernet1/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0 （ sec )
Port link-type: trunk
VLAN passing: 1 （ default vlan ), 10
VLAN permitted: 1 （ default vlan ), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
从以上输出可以判断

A) 端口 Ethemet1/0/1 是一个 Trunk 端口,允许任意 VLAN 的数据帧通过
B) 带有 VLAN1 标签的数据侦离开端口 Ethemet1/0/1 时不会被剥离标签
C) 端口 Ethemet1/0/1 是一个 Trunk 端口,只允许 VLAN 1 和 VLAN10 的数据侦通过
D) 不带 VLAN 标签的数据帧进入端口 Ethernet1/0/1 时会被打上 VLAN1 的标签

3. 如题图, SWA 、 SWB 、 SWC 和 SWD 启用了 STP , SWA 、 SWB 和 SWC 组成环路,拓扑稳定后,将 SWD 和 SWB 相连假设各链路开销相同,则关于 STP 的拓扑改变处理过程,以下说法正确的有

A) SWB 会从端口 E0/2 发出 TCN BPDU
B) SWD 会从端口 E0/1 发出 TCN BPDU
C) 如果 SWB 和 SWC 之间的链路中断,则 SWB 和 SWC 均会从端口 EO/2 发出 TCN BPDU
D) 如果 SWC 和 SWA 之间的链路中断,则 SWC 会从端口 E0/3 发出 TCN BPDU

4. 关于 MSTP 的兼容性配置,说法正确的有

A) 如果端口识别 / 发送 MSTP 消息的方式配置成了 dotls ,则端口只发送和接收标准格式的 MSTP 消息
B) 如果端口接收到的 MSTP 报文格式与所配置的报文格式不一致,则端口将成为指定端口,端口状态保持在 Discarding 状态,以防止出现环路
C) H3C 交换机的端口可以配置自动识别 MSTP 消息的格式并根据识别结果确定发送消息的格式
D) 通过命令 stpcompliance 可以配置端口的 MSTP 兼容工作方式,其中参数 auto 指端口只收发与非标准格式兼容的 MSTP 消息

5. AA 是网络安全的 - 种管理机制,它可以提供哪些安全功能

A) 计费（ Accounting )
B) 接入（ Access )
C) 认证（ Authentication )
D) 控制（ ACL )

Solutions: