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H3C GB0-372 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| VLAN and VLAN Routing | 15-20% | - VLAN Routing
|
| IRF Intelligent Resilient Framework | 20-25% | - IRF Architecture
|
| Switching Technology Basics | 10-15% | - Spanning Tree Protocol (STP)
|
| ACL and QoS | 15-20% | - QoS Fundamentals
|
| Switching Network Troubleshooting | 10-15% | - Diagnostic Tools
|
| Switch Security | 10-15% | - DHCP Security
|
H3CSE-RS-SW Sample Questions:
路由器运行 IGMPV2 协议,其直连局域网中的主机收到的 Query 报文中 Group Address 可能为(选择一项或多项)
- A. 224.0.0.2
- B. 255.255.255.255
- C. 0.0.0.0
- D. 224.0.0.1
- E. 225.1.1.1
Correct Answer: C,E 🗳️
如果需要在一个三层网络中实现组播数据的转发,至少配置如下协议或功能
- A. IGMP 协议
- B. PIM 协议
- C. BSR 配置
- D. IGMP Snooping 功能
Correct Answer: A,B 🗳️
关于 TC 保护,以下说法正确的有
- A. TC 保护在系统视图配置
- B. 系统会监控在该时间段内收到的 TC-BPDU 报文数是否大于阈值,如果大于阈值,则设备在该时间超时后再进行一次地址表项删除操作这样就可以避免频繁地删除转发地址表项
- C. TC 保护功能使能后,设备在收到 TC-BPDU 报文后的 10 秒内,允许收到 TC-BPDU 报文后立即进行地址表项删除操作的次数可以由用户控制
- D. 交换机在接收到 TC-BPDU 报文后,会执行 MAC 地址表项的删除操作
Correct Answer: A,B,C,D 🗳️
下列关于 OpenFlow 的描述,哪些是正确的 ? (选择 - 项或多项)
- A. Table Miss 表项的优先级为 0
- B. Table Miss 的动作可以自定义
- C. OpenFlow 使用 TCP 6633 端口号
- D. OpenFlow 交换机分为 OpenFlow-Only 交换机和 OpenFlow-Hybrid 交换机
Correct Answer: A,B,C,D 🗳️
如图组网, SWB 和 SWC 启用 STP SWC 为根, SWA 没有启用 STP 初始时链路 2 没有连接, PCB 可以将数据发到 PCA ,如果此时链路 1 故障,维护人员将链路 2 连接,则关于 PCB 到 PCA 数据传送业务的恢复过程说法正确的有(假设 PCA 不会主动发送数据)
- A. SWB 的端口 EO/1 进入 Forwarding 状态引发拓扑改变过程,使得 MAC 地址老化时间缩短,所以 PCB 到 PCA 的业务恢复总共需要默认 45 秒的时间
- B. 由于 SWA 没有启用 STP ,所以业务恢复需要等待 SWC 的 MAC 地址老化,默认需要 300 秒的时间
- C. SWA 端口 EO/1 链路中断后不会向 SWC 发送 TCN BPDU
- D. SWB 的端口 EO/1 需要等待默认 30 秒进入转发状态,所以 PCB 到 PCA 的业务恢复总共需要默认 30 秒的时间
Correct Answer: A,C 🗳️





